CAS No 51833-78-4 , (2S)-1-[(2S)-2-[[(2S,
3S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-amino-3-carboxypropanoyl]
amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-methylbutanoyl]
amino]-3-(4-hydroxyphenyl)propanoyl]amino]-3-methylpentanoyl]amino]-3-
(1H-imidazol-5-yl)propanoyl]pyrrolidine-2-carboxylic acid