3-[2-(2-{[31-amino-7-(4-aminobutyl)-39-benzyl-4-(2-carboxyethyl)-10-(carboxymethyl)-19,22,28-tris(hydroxymethyl)-42-[(4-hydroxyphenyl)methyl]-16-(2-methylpropyl)-13-[2-(methylsulfanyl)ethyl]-3,6,9,12,15,18,21,24,27,30,38,41,44,47-tetradecaoxo-45-(propan-2-yl)-33,34,49,50-tetrathia-2,5,8,11,14,17,20,23,26,29,37,40,43,46-tetradecaazabicyclo[23.22.4]henpentacontan-36-yl]formamido}-3-(1H-imidazol-4-yl)propanamido)-4-methylpentanamido]-3-({1-[(1-{[1-carboxy-2-(1H-indol-3-yl)ethyl]carbamoyl}-2-methylbutyl)carbamoyl]-2-methylbutyl}carbamoyl)propanoic acid