(2S)-2-(methyl{[(phenylmethyl)oxy]carbonyl}amino)-4-oxo-4-[(phenylmethyl)oxy]butanoic acid

[(4S)-3-methyl-5-oxo-2,2-bis(trifluoromethyl)-1,3-oxazolidin-4-yl]acetic acid

富马酸

甲胺

CBZ-L-天门冬氨酸β-苄酯