Chemical Formula: C20H36N6O7
Chemical Formula C20H36N6O7
Found 102 metabolite its formula value is C20H36N6O7
Ile Ile Asn Asn
(2S)-2-[(2S)-2-[(2S,3S)-2-[(2S,3S)-2-amino-3-methylpentanamido]-3-methylpentanamido]-3-carbamoylpropanamido]-3-carbamoylpropanoic acid
Ile Leu Asn Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3S)-2-amino-3-methylpentanamido]-4-methylpentanamido]-3-carbamoylpropanamido]-3-carbamoylpropanoic acid
Ile Asn Ile Asn
(2S)-2-[(2S,3S)-2-[(2S)-2-[(2S,3S)-2-amino-3-methylpentanamido]-3-carbamoylpropanamido]-3-methylpentanamido]-3-carbamoylpropanoic acid
Ile Asn Leu Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3S)-2-amino-3-methylpentanamido]-3-carbamoylpropanamido]-4-methylpentanamido]-3-carbamoylpropanoic acid
Ile Asn Asn Ile
(2S,3S)-2-[(2S)-2-[(2S)-2-[(2S,3S)-2-amino-3-methylpentanamido]-3-carbamoylpropanamido]-3-carbamoylpropanamido]-3-methylpentanoic acid
Ile Asn Asn Leu
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3S)-2-amino-3-methylpentanamido]-3-carbamoylpropanamido]-3-carbamoylpropanamido]-4-methylpentanoic acid
Ile Asn Gln Val
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3S)-2-amino-3-methylpentanamido]-3-carbamoylpropanamido]-4-carbamoylbutanamido]-3-methylbutanoic acid
Ile Asn Val Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3S)-2-amino-3-methylpentanamido]-3-carbamoylpropanamido]-3-methylbutanamido]-4-carbamoylbutanoic acid
Ile Gln Asn Val
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3S)-2-amino-3-methylpentanamido]-4-carbamoylbutanamido]-3-carbamoylpropanamido]-3-methylbutanoic acid
Ile Gln Val Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3S)-2-amino-3-methylpentanamido]-4-carbamoylbutanamido]-3-methylbutanamido]-3-carbamoylpropanoic acid
Ile Val Asn Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3S)-2-amino-3-methylpentanamido]-3-methylbutanamido]-3-carbamoylpropanamido]-4-carbamoylbutanoic acid
Ile Val Gln Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3S)-2-amino-3-methylpentanamido]-3-methylbutanamido]-4-carbamoylbutanamido]-3-carbamoylpropanoic acid
Lys Pro Gln Thr
(2S,3R)-2-[(2S)-4-carbamoyl-2-{[(2S)-1-[(2S)-2,6-diaminohexanoyl]pyrrolidin-2-yl]formamido}butanamido]-3-hydroxybutanoic acid
Lys Pro Thr Gln
(2S)-4-carbamoyl-2-[(2S,3R)-2-{[(2S)-1-[(2S)-2,6-diaminohexanoyl]pyrrolidin-2-yl]formamido}-3-hydroxybutanamido]butanoic acid
Lys Gln Pro Thr
(2S,3R)-2-{[(2S)-1-[(2S)-4-carbamoyl-2-[(2S)-2,6-diaminohexanamido]butanoyl]pyrrolidin-2-yl]formamido}-3-hydroxybutanoic acid
Lys Gln Thr Pro
(2S)-1-[(2S,3R)-2-[(2S)-4-carbamoyl-2-[(2S)-2,6-diaminohexanamido]butanamido]-3-hydroxybutanoyl]pyrrolidine-2-carboxylic acid
Lys Thr Pro Gln
(2S)-4-carbamoyl-2-{[(2S)-1-[(2S,3R)-2-[(2S)-2,6-diaminohexanamido]-3-hydroxybutanoyl]pyrrolidin-2-yl]formamido}butanoic acid
Lys Thr Gln Pro
(2S)-1-[(2S)-4-carbamoyl-2-[(2S,3R)-2-[(2S)-2,6-diaminohexanamido]-3-hydroxybutanamido]butanoyl]pyrrolidine-2-carboxylic acid
Leu Ile Asn Asn
(2S)-2-[(2S)-2-[(2S,3S)-2-[(2S)-2-amino-4-methylpentanamido]-3-methylpentanamido]-3-carbamoylpropanamido]-3-carbamoylpropanoic acid
Leu Leu Asn Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-methylpentanamido]-4-methylpentanamido]-3-carbamoylpropanamido]-3-carbamoylpropanoic acid
Leu Asn Ile Asn
(2S)-2-[(2S,3S)-2-[(2S)-2-[(2S)-2-amino-4-methylpentanamido]-3-carbamoylpropanamido]-3-methylpentanamido]-3-carbamoylpropanoic acid
Leu Asn Leu Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-methylpentanamido]-3-carbamoylpropanamido]-4-methylpentanamido]-3-carbamoylpropanoic acid
Leu Asn Asn Ile
(2S,3S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-methylpentanamido]-3-carbamoylpropanamido]-3-carbamoylpropanamido]-3-methylpentanoic acid
Leu Asn Asn Leu
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-methylpentanamido]-3-carbamoylpropanamido]-3-carbamoylpropanamido]-4-methylpentanoic acid
Leu Asn Gln Val
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-methylpentanamido]-3-carbamoylpropanamido]-4-carbamoylbutanamido]-3-methylbutanoic acid
Leu Asn Val Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-methylpentanamido]-3-carbamoylpropanamido]-3-methylbutanamido]-4-carbamoylbutanoic acid
Leu Gln Asn Val
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-methylpentanamido]-4-carbamoylbutanamido]-3-carbamoylpropanamido]-3-methylbutanoic acid
Leu Gln Val Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-methylpentanamido]-4-carbamoylbutanamido]-3-methylbutanamido]-3-carbamoylpropanoic acid
Leu Val Asn Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-methylpentanamido]-3-methylbutanamido]-3-carbamoylpropanamido]-4-carbamoylbutanoic acid
Leu Val Gln Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-methylpentanamido]-3-methylbutanamido]-4-carbamoylbutanamido]-3-carbamoylpropanoic acid
Asn Ile Ile Asn
(2S)-2-[(2S,3S)-2-[(2S,3S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-methylpentanamido]-3-methylpentanamido]-3-carbamoylpropanoic acid
Asn Ile Leu Asn
(2S)-2-[(2S)-2-[(2S,3S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-methylpentanamido]-4-methylpentanamido]-3-carbamoylpropanoic acid
Asn Ile Asn Ile
(2S,3S)-2-[(2S)-2-[(2S,3S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-methylpentanamido]-3-carbamoylpropanamido]-3-methylpentanoic acid
Asn Ile Asn Leu
(2S)-2-[(2S)-2-[(2S,3S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-methylpentanamido]-3-carbamoylpropanamido]-4-methylpentanoic acid
Asn Ile Gln Val
(2S)-2-[(2S)-2-[(2S,3S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-methylpentanamido]-4-carbamoylbutanamido]-3-methylbutanoic acid
Asn Ile Val Gln
(2S)-2-[(2S)-2-[(2S,3S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-methylpentanamido]-3-methylbutanamido]-4-carbamoylbutanoic acid
Asn Leu Ile Asn
(2S)-2-[(2S,3S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-4-methylpentanamido]-3-methylpentanamido]-3-carbamoylpropanoic acid
Asn Leu Leu Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-4-methylpentanamido]-4-methylpentanamido]-3-carbamoylpropanoic acid
Asn Leu Asn Ile
(2S,3S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-4-methylpentanamido]-3-carbamoylpropanamido]-3-methylpentanoic acid
Asn Leu Asn Leu
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-4-methylpentanamido]-3-carbamoylpropanamido]-4-methylpentanoic acid
Asn Leu Gln Val
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-4-methylpentanamido]-4-carbamoylbutanamido]-3-methylbutanoic acid
Asn Leu Val Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-4-methylpentanamido]-3-methylbutanamido]-4-carbamoylbutanoic acid
Asn Asn Ile Ile
(2S,3S)-2-[(2S,3S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-carbamoylpropanamido]-3-methylpentanamido]-3-methylpentanoic acid
Asn Asn Ile Leu
(2S)-2-[(2S,3S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-carbamoylpropanamido]-3-methylpentanamido]-4-methylpentanoic acid
Asn Asn Leu Ile
(2S,3S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-carbamoylpropanamido]-4-methylpentanamido]-3-methylpentanoic acid
Asn Asn Leu Leu
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-carbamoylpropanamido]-4-methylpentanamido]-4-methylpentanoic acid
Asn Gln Ile Val
(2S)-2-[(2S,3S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-4-carbamoylbutanamido]-3-methylpentanamido]-3-methylbutanoic acid
Asn Gln Leu Val
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-4-carbamoylbutanamido]-4-methylpentanamido]-3-methylbutanoic acid
Asn Gln Val Ile
(2S,3S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-4-carbamoylbutanamido]-3-methylbutanamido]-3-methylpentanoic acid
Asn Gln Val Leu
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-4-carbamoylbutanamido]-3-methylbutanamido]-4-methylpentanoic acid
Asn Val Ile Gln
(2S)-2-[(2S,3S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-methylbutanamido]-3-methylpentanamido]-4-carbamoylbutanoic acid
Asn Val Leu Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-methylbutanamido]-4-methylpentanamido]-4-carbamoylbutanoic acid
Asn Val Gln Ile
(2S,3S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-methylbutanamido]-4-carbamoylbutanamido]-3-methylpentanoic acid
Asn Val Gln Leu
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-methylbutanamido]-4-carbamoylbutanamido]-4-methylpentanoic acid
Pro Lys Gln Thr
(2S,3R)-2-[(2S)-2-[(2S)-6-amino-2-[(2S)-pyrrolidin-2-ylformamido]hexanamido]-4-carbamoylbutanamido]-3-hydroxybutanoic acid
Pro Lys Thr Gln
(2S)-2-[(2S,3R)-2-[(2S)-6-amino-2-[(2S)-pyrrolidin-2-ylformamido]hexanamido]-3-hydroxybutanamido]-4-carbamoylbutanoic acid
Pro Gln Lys Thr
(2S,3R)-2-[(2S)-6-amino-2-[(2S)-4-carbamoyl-2-[(2S)-pyrrolidin-2-ylformamido]butanamido]hexanamido]-3-hydroxybutanoic acid
Pro Gln Thr Lys
(2S)-6-amino-2-[(2S,3R)-2-[(2S)-4-carbamoyl-2-[(2S)-pyrrolidin-2-ylformamido]butanamido]-3-hydroxybutanamido]hexanoic acid
Pro Thr Lys Gln
(2S)-2-[(2S)-6-amino-2-[(2S,3R)-3-hydroxy-2-[(2S)-pyrrolidin-2-ylformamido]butanamido]hexanamido]-4-carbamoylbutanoic acid
Pro Thr Gln Lys
(2S)-6-amino-2-[(2S)-4-carbamoyl-2-[(2S,3R)-3-hydroxy-2-[(2S)-pyrrolidin-2-ylformamido]butanamido]butanamido]hexanoic acid
Gln Ile Asn Val
(2S)-2-[(2S)-2-[(2S,3S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-methylpentanamido]-3-carbamoylpropanamido]-3-methylbutanoic acid
Gln Ile Val Asn
(2S)-2-[(2S)-2-[(2S,3S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-methylpentanamido]-3-methylbutanamido]-3-carbamoylpropanoic acid
Gln Lys Pro Thr
(2S,3R)-2-{[(2S)-1-[(2S)-6-amino-2-[(2S)-2-amino-4-carbamoylbutanamido]hexanoyl]pyrrolidin-2-yl]formamido}-3-hydroxybutanoic acid
Gln Lys Thr Pro
(2S)-1-[(2S,3R)-2-[(2S)-6-amino-2-[(2S)-2-amino-4-carbamoylbutanamido]hexanamido]-3-hydroxybutanoyl]pyrrolidine-2-carboxylic acid
Gln Leu Asn Val
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-4-methylpentanamido]-3-carbamoylpropanamido]-3-methylbutanoic acid
Gln Leu Val Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-4-methylpentanamido]-3-methylbutanamido]-3-carbamoylpropanoic acid
Gln Asn Ile Val
(2S)-2-[(2S,3S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-carbamoylpropanamido]-3-methylpentanamido]-3-methylbutanoic acid
Gln Asn Leu Val
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-carbamoylpropanamido]-4-methylpentanamido]-3-methylbutanoic acid
Gln Asn Val Ile
(2S,3S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-carbamoylpropanamido]-3-methylbutanamido]-3-methylpentanoic acid
Gln Asn Val Leu
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-carbamoylpropanamido]-3-methylbutanamido]-4-methylpentanoic acid
Gln Pro Lys Thr
(2S,3R)-2-[(2S)-6-amino-2-{[(2S)-1-[(2S)-2-amino-4-carbamoylbutanoyl]pyrrolidin-2-yl]formamido}hexanamido]-3-hydroxybutanoic acid
Gln Pro Thr Lys
(2S)-6-amino-2-[(2S,3R)-2-{[(2S)-1-[(2S)-2-amino-4-carbamoylbutanoyl]pyrrolidin-2-yl]formamido}-3-hydroxybutanamido]hexanoic acid
Gln Gln Val Val
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-4-carbamoylbutanamido]-3-methylbutanamido]-3-methylbutanoic acid
Gln Thr Lys Pro
(2S)-1-[(2S)-6-amino-2-[(2S,3R)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-hydroxybutanamido]hexanoyl]pyrrolidine-2-carboxylic acid
Gln Thr Pro Lys
(2S)-6-amino-2-{[(2S)-1-[(2S,3R)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-hydroxybutanoyl]pyrrolidin-2-yl]formamido}hexanoic acid
Gln Val Ile Asn
(2S)-2-[(2S,3S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-methylbutanamido]-3-methylpentanamido]-3-carbamoylpropanoic acid
Gln Val Leu Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-methylbutanamido]-4-methylpentanamido]-3-carbamoylpropanoic acid
Gln Val Asn Ile
(2S,3S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-methylbutanamido]-3-carbamoylpropanamido]-3-methylpentanoic acid
Gln Val Asn Leu
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-methylbutanamido]-3-carbamoylpropanamido]-4-methylpentanoic acid
Gln Val Gln Val
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-methylbutanamido]-4-carbamoylbutanamido]-3-methylbutanoic acid
Gln Val Val Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-methylbutanamido]-3-methylbutanamido]-4-carbamoylbutanoic acid
Thr Lys Pro Gln
(2S)-2-{[(2S)-1-[(2S)-6-amino-2-[(2S,3R)-2-amino-3-hydroxybutanamido]hexanoyl]pyrrolidin-2-yl]formamido}-4-carbamoylbutanoic acid
Thr Lys Gln Pro
(2S)-1-[(2S)-2-[(2S)-6-amino-2-[(2S,3R)-2-amino-3-hydroxybutanamido]hexanamido]-4-carbamoylbutanoyl]pyrrolidine-2-carboxylic acid
Thr Pro Lys Gln
(2S)-2-[(2S)-6-amino-2-{[(2S)-1-[(2S,3R)-2-amino-3-hydroxybutanoyl]pyrrolidin-2-yl]formamido}hexanamido]-4-carbamoylbutanoic acid
Thr Pro Gln Lys
(2S)-6-amino-2-[(2S)-2-{[(2S)-1-[(2S,3R)-2-amino-3-hydroxybutanoyl]pyrrolidin-2-yl]formamido}-4-carbamoylbutanamido]hexanoic acid
Thr Gln Lys Pro
(2S)-1-[(2S)-6-amino-2-[(2S)-2-[(2S,3R)-2-amino-3-hydroxybutanamido]-4-carbamoylbutanamido]hexanoyl]pyrrolidine-2-carboxylic acid
Thr Gln Pro Lys
(2S)-6-amino-2-{[(2S)-1-[(2S)-2-[(2S,3R)-2-amino-3-hydroxybutanamido]-4-carbamoylbutanoyl]pyrrolidin-2-yl]formamido}hexanoic acid
Val Ile Asn Gln
(2S)-2-[(2S)-2-[(2S,3S)-2-[(2S)-2-amino-3-methylbutanamido]-3-methylpentanamido]-3-carbamoylpropanamido]-4-carbamoylbutanoic acid
Val Ile Gln Asn
(2S)-2-[(2S)-2-[(2S,3S)-2-[(2S)-2-amino-3-methylbutanamido]-3-methylpentanamido]-4-carbamoylbutanamido]-3-carbamoylpropanoic acid
Val Leu Asn Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-4-methylpentanamido]-3-carbamoylpropanamido]-4-carbamoylbutanoic acid
Val Leu Gln Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-4-methylpentanamido]-4-carbamoylbutanamido]-3-carbamoylpropanoic acid
Val Asn Ile Gln
(2S)-2-[(2S,3S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-3-carbamoylpropanamido]-3-methylpentanamido]-4-carbamoylbutanoic acid
Val Asn Leu Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-3-carbamoylpropanamido]-4-methylpentanamido]-4-carbamoylbutanoic acid
Val Asn Gln Ile
(2S,3S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-3-carbamoylpropanamido]-4-carbamoylbutanamido]-3-methylpentanoic acid
Val Asn Gln Leu
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-3-carbamoylpropanamido]-4-carbamoylbutanamido]-4-methylpentanoic acid
Val Gln Ile Asn
(2S)-2-[(2S,3S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-4-carbamoylbutanamido]-3-methylpentanamido]-3-carbamoylpropanoic acid
Val Gln Leu Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-4-carbamoylbutanamido]-4-methylpentanamido]-3-carbamoylpropanoic acid
Val Gln Asn Ile
(2S,3S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-4-carbamoylbutanamido]-3-carbamoylpropanamido]-3-methylpentanoic acid
Val Gln Asn Leu
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-4-carbamoylbutanamido]-3-carbamoylpropanamido]-4-methylpentanoic acid
Val Gln Gln Val
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-4-carbamoylbutanamido]-4-carbamoylbutanamido]-3-methylbutanoic acid
Val Gln Val Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-4-carbamoylbutanamido]-3-methylbutanamido]-4-carbamoylbutanoic acid
Val Val Gln Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-3-methylbutanamido]-4-carbamoylbutanamido]-4-carbamoylbutanoic acid