3-{[5-(1H-indol-3-ylmethyl)-2-(carbamoylmethyl)-1,4,7-trioxo-3,6-diazahexadec-1-yl]amino}-4-({3-[2-(2-aminophenyl)-2-oxoethyl]-24-(3-aminopropyl)-15,21-bis(carboxymethyl)-6-(1-carboxyprop-2-yl)-9-(hydroxymethyl)-31-methyl-2,5,8,11,14,17,20,23,26,29-decaoxo-4,7,10,13,16,19,22,25,28-nonaza-1-oxacyclohentriacontan-30-yl}amino)-4-oxobutanoic acid