(4-nitrophenyl) 2-[[3-hydroxy-2-(phenylmethoxycarbonylamino)propanoyl]amino]acetate

benzyl (1-(1,3-dicyclohexylureido)-3-hydroxy-1-oxopropan-2-yl)carbamate

N-苄氧羰基丝氨酰亮氨酰胺

methyl 2-[[3-hydroxy-2-(phenylmethoxycarbonylamino)propanoyl]amino]-4-methylpentanoate

N-苄氧羰基-O-苄基-L-丝氨酸