CAS No 219138-02-0 , (4S)-5-[[(2S,
3R)-1-[[(2S)-3-carboxy-1-oxo-1-[[2-oxo-4-(trifluoromethyl)chromen-7-yl]
amino]propan-2-yl]amino]-3-hydroxy-1-oxobutan-2-yl]amino]-4-[[(2S,
3S)-3-methyl-2-(phenylmethoxycarbonylamino)pentanoyl]amino]-5-
oxopentanoic acid