N-(8-{[8-(1H-indol-3-ylmethyl)-5-(carbamoylmethyl)-2-(carboxymethyl)-1,4,7,10-tetraoxo-3,6,9-triazanonadec-1-yl]amino}-27-amino-12-[2-(2-aminophenyl)-2-oxoethyl]-2-(3-aminopropyl)-24-(carboxymethyl)-15-(1-carboxyprop-2-yl)-18-(hydroxymethyl)-9-methyl-1,4,7,11,14,17,20,23,26-nonaoxo-3,6,13,16,19,22,25-heptaza-10-oxaoctacos-1-yl)-DL-aspartic acid