Exact Mass: 669.3138

9??-Acetyl-10??-deacetyl-spicataxine

3-Deoxy-Auramycin C

(1R,2S,4S,5S,6R,7R,8S,9S,10S)-8-acetoxy-9-benzoyloxy-15(2)-methylbutyroyloxy-2-nicotynoyloxy-1,4,6-trihydroxy-dihydro-beta-agarofuran

lysyl->-cyclo-[L-2,3-diamino-propionyl->-L-seryl->-L-seryl->-(Z)-2-amino-3-ureido-acryloyl->-(S)-amino-((R)-2-amino-1(3),4,5,6-tetrahydro-pyrimidin-4-yl)-acetyl-(1->N3)]|Tuberactinomycin O

rifamycin W-28-desmethyl-28-carboxy

Phe Asp Phe Gln Asn

C31H39N7O10 (669.2758)

Pro Tyr Met Ile Phe

C34H47N5O7S (669.3196)

FDFQN

Phe Asp Phe Gln Asn

C31H39N7O10 (669.2758)

PYMIF

Pro-Tyr-Met-Ile-Phe

C34H47N5O7S (669.3196)

FDEFL

Phe Asp Glu Phe Leu

C33H43N5O10 (669.301)

DMT-2-OMe-ibu-G

C36H39N5O8 (669.2798)

Viomycin, 6-(L-2-(2-amino-1,4,5,6-tetrahydro-4-pyrimidinyl)glycine)-, (R)-

7,8-Didehydro-28-hydroxy-3-methylprostreptovaricin

Esulatin M, (rel)-

A natural product found in Euphorbia esula.

N-(2-aminophenyl)-4-[[[(2S,3R)-5-[(2S)-1-hydroxypropan-2-yl]-3-methyl-6-oxo-9-[(4,4,4-trifluoro-1-oxobutyl)amino]-2,3,4,7-tetrahydro-1,5-benzoxazonin-2-yl]methyl-methylamino]methyl]benzamide

C35H42F3N5O5 (669.3138)

N-(2-aminophenyl)-4-[[[(2S,3R)-5-[(2R)-1-hydroxypropan-2-yl]-3-methyl-6-oxo-9-[(4,4,4-trifluoro-1-oxobutyl)amino]-2,3,4,7-tetrahydro-1,5-benzoxazonin-2-yl]methyl-methylamino]methyl]benzamide

C35H42F3N5O5 (669.3138)

[2-[(E,3E)-3-[1-(5-carboxypentyl)-3,3-dimethyl-5-sulfoindol-2-ylidene]prop-1-enyl]-3-methyl-4-phenylchromen-7-ylidene]-diethylazanium

C39H45N2O6S+ (669.2998)

PC 18:4/7:3;O3

PC 25:7;O3

PE 20:4/8:3;O3

PE 20:5/8:2;O3

PE 28:7;O3

LNAPS 27:6;O

PS O-27:7;O2

PS P-18:1/9:5;O2

PS 18:4/8:3;O2

C32H48NO12P (669.2914)

PS 20:3/7:3;O

PS 22:5/5:1;O

PS 22:6/4:1;O2

C32H48NO12P (669.2914)

PS 26:7;O2

C32H48NO12P (669.2914)

PS 27:6;O

ST 25:3;O8;HexNAc

C33H51NO13 (669.336)

ST 29:7;O5;HexNAc

2',10',13'-tris(acetyloxy)-9'-hydroxy-8',12',15',15'-tetramethylspiro[oxirane-2,4'-tricyclo[9.3.1.0³,⁸]pentadecan]-11'-en-5'-yl 3-(dimethylamino)-3-phenylpropanoate

(2s)-n-[(1s)-1-{[(2r,3s,6r)-4,7-dihydroxy-6-[(1r)-1-hydroxy-2-methylpropyl]-2-methyl-11-oxo-1-oxa-5,8-diazacycloundeca-4,7-dien-3-yl]-c-hydroxycarbonimidoyl}-2-sulfoethyl]-2-[(1-hydroxy-2-phenylethylidene)amino]-3-methylbutanimidic acid

(2s)-n-[(1s)-1-{[(2r,3s,6r)-4,7-dihydroxy-6-[(1r)-1-hydroxy-2-methylpropyl]-2-methyl-11-oxo-1-oxa-5,8-diazacycloundeca-4,7-dien-3-yl]-c-hydroxycarbonimidoyl}-2-sulfoethyl]-2-[(1-hydroxy-2-phenylethylidene)amino]-3-methylbutanimidic acid

C29H43N5O11S (669.268)

17-ethyl-2,4,10,12,14,16-hexahydroxy-9-(hydroxymethyl)-3,7,11,13,15,21-hexamethyl-23-azatricyclo[22.3.1.0⁵,²⁷]octacosa-1,3,5(27),7,18,20,24-heptaene-6,22,26,28-tetrone

13-[(2r,3r,4s,5r)-4-hydroxy-5-(hydroxymethyl)-3-{[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}pyrrolidin-2-yl]-1-{[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}tridecan-4-one

13-[(2r,3r,4s,5r)-4-hydroxy-5-(hydroxymethyl)-3-{[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}pyrrolidin-2-yl]-1-{[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}tridecan-4-one

C30H55NO15 (669.3572)

(7z,18e,20z)-17-ethyl-2,4,10,12,14,16,22-heptahydroxy-9-(hydroxymethyl)-3,7,11,13,15,21-hexamethyl-23-azatricyclo[22.3.1.0⁵,²⁷]octacosa-1(27),2,4,7,18,20,22,24-octaene-6,26,28-trione

13-[(2r,3r,4r,5r)-4-hydroxy-5-(hydroxymethyl)-3-{[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}pyrrolidin-2-yl]-1-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}tridecan-4-one

13-[(2r,3r,4r,5r)-4-hydroxy-5-(hydroxymethyl)-3-{[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}pyrrolidin-2-yl]-1-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}tridecan-4-one

C30H55NO15 (669.3572)

2α17-dihydroxy-9α,10β,13α-triacetoxy-5α-(3'-n,n-dimethylamino-3'-phenyl)-propionyloxy-taxa-4(20),11-diene

{"Ingredient_id": "HBIN005151","Ingredient_name": "2\u03b117-dihydroxy-9\u03b1,10\u03b2,13\u03b1-triacetoxy-5\u03b1-(3'-n,n-dimethylamino-3'-phenyl)-propionyloxy-taxa-4(20),11-diene","Alias": "NA","Ingredient_formula": "C37H51NO10","Ingredient_Smile": "Not Available","Ingredient_weight": "NA","OB_score": "NA","CAS_id": "NA","SymMap_id": "NA","TCMID_id": "6156","TCMSP_id": "NA","TCM_ID_id": "NA","PubChem_id": "NA","DrugBank_id": "NA"}

7beta,9alpha-bisdeacetylaustrospicatine

7β,9α-bisdeacetylaustrospicatine

{"Ingredient_id": "HBIN013092","Ingredient_name": "7beta,9alpha-bisdeacetylaustrospicatine","Alias": "7\u03b2,9\u03b1-bisdeacetylaustrospicatine","Ingredient_formula": "C37H51NO10","Ingredient_Smile": "Not Available","Ingredient_weight": "NA","OB_score": "NA","CAS_id": "NA","SymMap_id": "NA","TCMID_id": "30666;2437","TCMSP_id": "NA","TCM_ID_id": "NA","PubChem_id": "NA","DrugBank_id": "NA"}

9alpha-acetyl-10beta-deacetyl-spicataxine

9α-acetyl-10β-deacetyl-spicataxine

{"Ingredient_id": "HBIN014040","Ingredient_name": "9alpha-acetyl-10beta-deacetyl-spicataxine","Alias": "9\u03b1-acetyl-10\u03b2-deacetyl-spicataxine","Ingredient_formula": "C37H51NO10","Ingredient_Smile": "CC1=C2C(C(C3(CCC(C4(C3C(C(C2(C)C)CC1OC(=O)C)OC(=O)C)CO4)OC(=O)CC(C5=CC=CC=C5)N(C)C)C)OC(=O)C)O","Ingredient_weight": "NA","OB_score": "NA","CAS_id": "NA","SymMap_id": "NA","TCMID_id": "26107;365","TCMSP_id": "NA","TCM_ID_id": "NA","PubChem_id": "NA","DrugBank_id": "NA"}

3,6-diamino-n-[(6z)-2,5,8,11,14-pentahydroxy-6-[(c-hydroxycarbonimidoylamino)methylidene]-9,12-bis(hydroxymethyl)-3-(2-imino-1,3-diazinan-4-yl)-1,4,7,10,13-pentaazacyclohexadeca-1,4,7,10,13-pentaen-15-yl]hexanimidic acid

3,6-diamino-n-[(6z)-2,5,8,11,14-pentahydroxy-6-[(c-hydroxycarbonimidoylamino)methylidene]-9,12-bis(hydroxymethyl)-3-(2-imino-1,3-diazinan-4-yl)-1,4,7,10,13-pentaazacyclohexadeca-1,4,7,10,13-pentaen-15-yl]hexanimidic acid

(3r,4z,6z,8e)-3-hydroxy-n-[(2e,4e,6r,7r,9s)-6-hydroxy-9-[(1r,4s,7r,8s)-8-hydroxy-1,5,7-trimethyl-3,6-dioxo-2-oxa-5-azaspiro[3.4]octan-8-yl]-9-methoxy-7-methylnona-2,4-dien-1-yl]-2,2,4-trimethyl-10-(1,3-oxazol-5-yl)deca-4,6,8-trienimidic acid

(3r,4z,6z,8e)-3-hydroxy-n-[(2e,4e,6r,7r,9s)-6-hydroxy-9-[(1r,4s,7r,8s)-8-hydroxy-1,5,7-trimethyl-3,6-dioxo-2-oxa-5-azaspiro[3.4]octan-8-yl]-9-methoxy-7-methylnona-2,4-dien-1-yl]-2,2,4-trimethyl-10-(1,3-oxazol-5-yl)deca-4,6,8-trienimidic acid

[(1r,2r,3r,4s,5s,7r,9s,10r,11s,13s,15r)-9-(acetyloxy)-7,15-dihydroxy-5,9,12,12-tetramethyl-2-{[(2e)-2-methylbut-2-enoyl]oxy}-8-oxo-4-(propanoyloxy)tetracyclo[8.5.0.0³,⁷.0¹¹,¹³]pentadecan-1-yl]methyl pyridine-3-carboxylate

[(1r,2r,3r,4s,5s,7r,9s,10r,11s,13s,15r)-9-(acetyloxy)-7,15-dihydroxy-5,9,12,12-tetramethyl-2-{[(2e)-2-methylbut-2-enoyl]oxy}-8-oxo-4-(propanoyloxy)tetracyclo[8.5.0.0³,⁷.0¹¹,¹³]pentadecan-1-yl]methyl pyridine-3-carboxylate

(2s,3s,3ar,4r,7r,8s,12s,13ar)-4,7,13a-tris(acetyloxy)-2,9,9,12-tetramethyl-5-methylidene-3-[(2-methylpropanoyl)oxy]-13-oxo-1h,2h,3h,3ah,4h,6h,7h,8h,12h-cyclopenta[12]annulen-8-yl pyridine-3-carboxylate

(2s,3s,3ar,4r,7r,8s,12s,13ar)-4,7,13a-tris(acetyloxy)-2,9,9,12-tetramethyl-5-methylidene-3-[(2-methylpropanoyl)oxy]-13-oxo-1h,2h,3h,3ah,4h,6h,7h,8h,12h-cyclopenta[12]annulen-8-yl pyridine-3-carboxylate

n-(1-{[4,7-dihydroxy-6-(1-hydroxy-2-methylpropyl)-2-methyl-11-oxo-1-oxa-5,8-diazacycloundeca-4,7-dien-3-yl]-c-hydroxycarbonimidoyl}-2-sulfoethyl)-2-[(1-hydroxy-2-phenylethylidene)amino]-3-methylbutanimidic acid

n-(1-{[4,7-dihydroxy-6-(1-hydroxy-2-methylpropyl)-2-methyl-11-oxo-1-oxa-5,8-diazacycloundeca-4,7-dien-3-yl]-c-hydroxycarbonimidoyl}-2-sulfoethyl)-2-[(1-hydroxy-2-phenylethylidene)amino]-3-methylbutanimidic acid

C29H43N5O11S (669.268)

(7z,9r,10r,11r,12s,13s,14s,15r,16s,17s,18e,20z)-2,4,10,12,14,16,22-heptahydroxy-21-(hydroxymethyl)-3,7,11,13,15,17-hexamethyl-6,26,28-trioxo-23-azatricyclo[22.3.1.0⁵,²⁷]octacosa-1(27),2,4,7,18,20,22,24-octaene-9-carbaldehyde

(7z,9r,10r,11r,12s,13s,14s,15r,16s,17s,18e,20z)-2,4,10,12,14,16,22-heptahydroxy-21-(hydroxymethyl)-3,7,11,13,15,17-hexamethyl-6,26,28-trioxo-23-azatricyclo[22.3.1.0⁵,²⁷]octacosa-1(27),2,4,7,18,20,22,24-octaene-9-carbaldehyde

(1'r,2r,2'r,3'r,5's,8'r,9'r,10'r,13's)-2',10',13'-tris(acetyloxy)-9'-hydroxy-8',12',15',15'-tetramethylspiro[oxirane-2,4'-tricyclo[9.3.1.0³,⁸]pentadecan]-11'-en-5'-yl (3r)-3-(dimethylamino)-3-phenylpropanoate

(1'r,2r,2'r,3'r,5's,8'r,9'r,10'r,13's)-2',10',13'-tris(acetyloxy)-9'-hydroxy-8',12',15',15'-tetramethylspiro[oxirane-2,4'-tricyclo[9.3.1.0³,⁸]pentadecan]-11'-en-5'-yl (3r)-3-(dimethylamino)-3-phenylpropanoate

(2e,16z,18e,20s,21s,22r,23r,24r,25s,28r,29r)-6,8,15,21,23,27,28-heptahydroxy-16-(hydroxymethyl)-3,7,20,22,24,29-hexamethyl-26-oxa-14-azatetracyclo[23.2.2.1⁹,¹³.0⁵,¹⁰]triaconta-2,5,7,9,12,14,16,18-octaene-4,11,30-trione

(2e,16z,18e,20s,21s,22r,23r,24r,25s,28r,29r)-6,8,15,21,23,27,28-heptahydroxy-16-(hydroxymethyl)-3,7,20,22,24,29-hexamethyl-26-oxa-14-azatetracyclo[23.2.2.1⁹,¹³.0⁵,¹⁰]triaconta-2,5,7,9,12,14,16,18-octaene-4,11,30-trione

4,7,13a-tris(acetyloxy)-2,9,9,12-tetramethyl-5-methylidene-3-[(2-methylpropanoyl)oxy]-13-oxo-1h,2h,3h,3ah,4h,6h,7h,8h,12h-cyclopenta[12]annulen-8-yl pyridine-3-carboxylate

[(2s,3s,3ar,4r,4as,5r,8s,8ar,9s,10ar)-3,5,9-tris(acetyloxy)-4-butoxy-10a-hydroxy-2,9-dimethyl-10-oxo-8-(prop-1-en-2-yl)-1h,2h,3h,3ah,4h,5h,8h,8ah-cyclohexa[f]azulen-4a-yl]methyl pyridine-3-carboxylate

[(2s,3s,3ar,4r,4as,5r,8s,8ar,9s,10ar)-3,5,9-tris(acetyloxy)-4-butoxy-10a-hydroxy-2,9-dimethyl-10-oxo-8-(prop-1-en-2-yl)-1h,2h,3h,3ah,4h,5h,8h,8ah-cyclohexa[f]azulen-4a-yl]methyl pyridine-3-carboxylate

2',9',13'-tris(acetyloxy)-10'-hydroxy-8',12',15',15'-tetramethylspiro[oxirane-2,4'-tricyclo[9.3.1.0³,⁸]pentadecan]-11'-en-5'-yl 3-(dimethylamino)-3-phenylpropanoate

3-hydroxy-n-(6-hydroxy-9-{8-hydroxy-1,5,7-trimethyl-3,6-dioxo-2-oxa-5-azaspiro[3.4]octan-8-yl}-9-methoxy-7-methylnona-2,4-dien-1-yl)-2,2,4-trimethyl-10-(1,3-oxazol-5-yl)deca-4,6,8-trienimidic acid

(2s,4r)-4-{[hydroxy({2-[(3s)-3-{[(2s,3s)-1-hydroxy-2-({hydroxy[(2r)-1-methylpiperidin-2-yl]methylidene}amino)-3-methylpentylidene]amino}-4-methyl-2-oxopentyl]-1,3-thiazol-4-yl})methylidene]amino}-2-methyl-5-phenylpentanoic acid

(2s,4r)-4-{[hydroxy({2-[(3s)-3-{[(2s,3s)-1-hydroxy-2-({hydroxy[(2r)-1-methylpiperidin-2-yl]methylidene}amino)-3-methylpentylidene]amino}-4-methyl-2-oxopentyl]-1,3-thiazol-4-yl})methylidene]amino}-2-methyl-5-phenylpentanoic acid

C35H51N5O6S (669.356)

(7z,9s,10s,11r,12s,13s,14s,15s,16r,17s,18e,20z)-17-ethyl-2,4,10,12,14,16,22-heptahydroxy-9-(hydroxymethyl)-3,7,11,13,15,21-hexamethyl-23-azatricyclo[22.3.1.0⁵,²⁷]octacosa-1(27),2,4,7,18,20,22,24-octaene-6,26,28-trione

(7z,9s,10s,11r,12s,13s,14s,15s,16r,17s,18e,20z)-17-ethyl-2,4,10,12,14,16,22-heptahydroxy-9-(hydroxymethyl)-3,7,11,13,15,21-hexamethyl-23-azatricyclo[22.3.1.0⁵,²⁷]octacosa-1(27),2,4,7,18,20,22,24-octaene-6,26,28-trione

[9-(acetyloxy)-7,15-dihydroxy-5,9,12,12-tetramethyl-2-[(2-methylbut-2-enoyl)oxy]-8-oxo-4-(propanoyloxy)tetracyclo[8.5.0.0³,⁷.0¹¹,¹³]pentadecan-1-yl]methyl pyridine-3-carboxylate

(3s)-3,6-diamino-n-[(3r,6e,9s,12r,15r)-2,5,8,11,14-pentahydroxy-6-[(c-hydroxycarbonimidoylamino)methylidene]-9,12-bis(hydroxymethyl)-3-[(4s)-2-imino-1,3-diazinan-4-yl]-1,4,7,10,13-pentaazacyclohexadeca-1,4,7,10,13-pentaen-15-yl]hexanimidic acid

(3s)-3,6-diamino-n-[(3r,6e,9s,12r,15r)-2,5,8,11,14-pentahydroxy-6-[(c-hydroxycarbonimidoylamino)methylidene]-9,12-bis(hydroxymethyl)-3-[(4s)-2-imino-1,3-diazinan-4-yl]-1,4,7,10,13-pentaazacyclohexadeca-1,4,7,10,13-pentaen-15-yl]hexanimidic acid

(3r,4z,6z,8e)-3-hydroxy-n-[(2e,4e,6r,7r,9s)-6-hydroxy-9-[(1s,4s,7r,8s)-8-hydroxy-1,5,7-trimethyl-3,6-dioxo-2-oxa-5-azaspiro[3.4]octan-8-yl]-9-methoxy-7-methylnona-2,4-dien-1-yl]-2,2,4-trimethyl-10-(1,3-oxazol-5-yl)deca-4,6,8-trienimidic acid

(3r,4z,6z,8e)-3-hydroxy-n-[(2e,4e,6r,7r,9s)-6-hydroxy-9-[(1s,4s,7r,8s)-8-hydroxy-1,5,7-trimethyl-3,6-dioxo-2-oxa-5-azaspiro[3.4]octan-8-yl]-9-methoxy-7-methylnona-2,4-dien-1-yl]-2,2,4-trimethyl-10-(1,3-oxazol-5-yl)deca-4,6,8-trienimidic acid

2,4,10,12,14,16,22-heptahydroxy-21-(hydroxymethyl)-3,7,11,13,15,17-hexamethyl-6,26,28-trioxo-23-azatricyclo[22.3.1.0⁵,²⁷]octacosa-1,3,5(27),7,18,20,22,24-octaene-9-carbaldehyde

(7z,9s,10r,11s,12s,13r,14s,15s,16r,17r,18e,20z)-17-ethyl-2,4,10,12,14,16,22-heptahydroxy-9-(hydroxymethyl)-3,7,11,13,15,21-hexamethyl-23-azatricyclo[22.3.1.0⁵,²⁷]octacosa-1(27),2,4,7,18,20,22,24-octaene-6,26,28-trione

(7z,9s,10r,11s,12s,13r,14s,15s,16r,17r,18e,20z)-17-ethyl-2,4,10,12,14,16,22-heptahydroxy-9-(hydroxymethyl)-3,7,11,13,15,21-hexamethyl-23-azatricyclo[22.3.1.0⁵,²⁷]octacosa-1(27),2,4,7,18,20,22,24-octaene-6,26,28-trione

(1s,2r,3r,4s,5s,7r,8s,9r,10r,11s)-2,7-bis(acetyloxy)-11-[2-(acetyloxy)propan-2-yl]-5,9-dimethyl-14-oxo-4-(propanoyloxy)-16-oxatetracyclo[7.5.2.0¹,¹⁰.0³,⁷]hexadec-12-en-8-yl pyridine-3-carboxylate

(1s,2r,3r,4s,5s,7r,8s,9r,10r,11s)-2,7-bis(acetyloxy)-11-[2-(acetyloxy)propan-2-yl]-5,9-dimethyl-14-oxo-4-(propanoyloxy)-16-oxatetracyclo[7.5.2.0¹,¹⁰.0³,⁷]hexadec-12-en-8-yl pyridine-3-carboxylate

(1'r,2r,2'r,3'r,5's,8'r,9'r,10'r,13's)-2',9',13'-tris(acetyloxy)-10'-hydroxy-8',12',15',15'-tetramethylspiro[oxirane-2,4'-tricyclo[9.3.1.0³,⁸]pentadecan]-11'-en-5'-yl (3r)-3-(dimethylamino)-3-phenylpropanoate

(1'r,2r,2'r,3'r,5's,8'r,9'r,10'r,13's)-2',9',13'-tris(acetyloxy)-10'-hydroxy-8',12',15',15'-tetramethylspiro[oxirane-2,4'-tricyclo[9.3.1.0³,⁸]pentadecan]-11'-en-5'-yl (3r)-3-(dimethylamino)-3-phenylpropanoate

(7z,18z,20z)-17-ethyl-2,4,10,12,14,16,22-heptahydroxy-9-(hydroxymethyl)-3,7,11,13,15,21-hexamethyl-23-azatricyclo[22.3.1.0⁵,²⁷]octacosa-1(27),2,4,7,18,20,22,24-octaene-6,26,28-trione

(3r,4z,6e,8e)-3-hydroxy-n-[(2e,4e,6r,7r,9s)-6-hydroxy-9-[(1r,4s,7r,8s)-8-hydroxy-1,5,7-trimethyl-3,6-dioxo-2-oxa-5-azaspiro[3.4]octan-8-yl]-9-methoxy-7-methylnona-2,4-dien-1-yl]-2,2,4-trimethyl-10-(1,3-oxazol-5-yl)deca-4,6,8-trienimidic acid

(3r,4z,6e,8e)-3-hydroxy-n-[(2e,4e,6r,7r,9s)-6-hydroxy-9-[(1r,4s,7r,8s)-8-hydroxy-1,5,7-trimethyl-3,6-dioxo-2-oxa-5-azaspiro[3.4]octan-8-yl]-9-methoxy-7-methylnona-2,4-dien-1-yl]-2,2,4-trimethyl-10-(1,3-oxazol-5-yl)deca-4,6,8-trienimidic acid