(2S)-N-[(1S)-1-[[(2S)-1-[(2S)-2-[[(1S)-2-carbamoyl-1-[[(1S)-1-carbamoy l-2-(1H-indol-3-yl)ethyl]carbamoyl]ethyl]carbamoyl]pyrrolidin-1-yl]-3- hydroxy-1-oxo-propan-2-yl]carbamoyl]-2-phenyl-ethyl]-2-[[(2S)-4-methyl -2-[[(2S)-5-oxopyrrolidine-2-carbonyl]amino]pentanoyl]amino]butanediam ide