(4S)-4-[[(2S)-2-[[(2S)-6-amino-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-3 -carboxy-propanoyl]amino]-3-hydroxy-butanoyl]amino]-3-(4H-imidazol-4-y l)propanoyl]amino]hexanoyl]amino]-3-hydroxy-propanoyl]amino]-4-[[(1S,2 S)-1-carbamoyl-2-methyl-butyl]carbamoyl]butanoic acid