Chemical Formula: C63H85N13O20S2

2-({[10-(4-aminobutyl)-16-benzyl-19-({2-[11-carboxy-4,7,10-tris(carboxymethyl)-2-hydroxy-1,4,7,10-tetraazaundec-1-en-1-yl]-1-hydroxy-3-phenylpropylidene}amino)-6,9,12,15,18-pentahydroxy-7-(1-hydroxyethyl)-13-[(1H-indol-3-yl)methyl]-1,2-dithia-5,8,11,14,17-pentaazacycloicosa-5,8,11,14,17-pentaen-4-yl](hydroxy)methylidene}amino)-3-hydroxybutanoate