. "1N-(1-carbamoyl-2-hydroxypropyl)-7-[3-amino(imino)methylaminopropyl]-16-(1-amino-2-phenylethylcarboxamido)-10-benzyl-4-(1H-3-indolylmethyl)-13-(2-methyl-1H-5-imidazolylmethyl)-3,6,9,12,15,19-hexaoxo-2,5,8,11,14,20-hexaazacyclotetracosane-1-carbox" . "11" . . . . . . . .