(3S)-3-amino-3-[[(1S)-1-[[(1S)-1-[[(1S)-1-[[(1S,2S)-1-[[(2S)-1-[(2S)-2 -[[(1S)-1-carboxyethyl]carbamoyl]pyrrolidin-1-yl]-3-(3H-imidazol-4-yl) -1-oxo-propan-2-yl]carbamoyl]-2-methyl-butyl]carbamoyl]-2-(4-hydroxyph enyl)ethyl]carbamoyl]-2-methyl-propyl]carbamoyl]-4-(diaminomethylidene amino)butyl]carbamoyl]propanoic acid