3-(2-carboxyethyl)hexahydropyrrolo[1,2-a]pyrazin-1,4-dione 、
(S)-2-Amino-pentanedioic acid 5-amide 1-({(S)-1-[(S)-1-({[(S)-1-((S)-1-carbamoyl-3-methylsulfanyl-propylcarbamoyl)-3-methyl-butylcarbamoyl]-methyl}-carbamoyl)-2-phenyl-ethylcarbamoyl]-2-phenyl-ethyl}-amide); hydrochloride 生成 (2S)-2-[3-[(3S,8aS)-1,4-dioxo-2,3,6,7,8,8a-hexahydropyrrolo[1,2-a]pyrazin-3-yl]propanoylamino]-N-[(2S)-1-[[(2S)-1-[[2-[[(2S)-1-[[(2S)-1-amino-4-methylsulfanyl-1-oxobutan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-2-oxoethyl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]pentanediamide