4-氧代-2-[[(苯基甲氧基)羰基]氨基]-丁酸苯甲酯

4-(phenylmethoxycarbonylaminomethyl)benzoic acid

benzyl N-(2-oxoazetidin-3-yl)carbamate

乌苯美司侧链

1-甲基-1,2-肼基二羧酸二苄酯