3-{[5-(1H-indol-3-ylmethyl)-2-(carbamoylmethyl)-1,4,7-trioxo-3,6-diazahexadec-1-yl]amino}-4-({14-[2-(2-aminophenyl)-2-oxoethyl]-4-(3-aminopropyl)-26-(carboxymethyl)-17-(1-carboxyprop-2-yl)-20-(hydroxymethyl)-11,29-dimethyl-3,6,9,13,16,19,22,25,28,31,33-undecaoxo-2,5,8,15,18,21,24,27,30-nonaza-12-oxabicyclo[28.2.1]tritriacontan-10-yl}amino)-4-oxobutanoic acid