2-[3-[3,4-bis(ethoxycarbonyloxy)phenyl]prop-2-enoylamino]acetic acid

2-[[3,4-bis(ethoxycarbonyloxy)benzoyl]amino]acetic acid

2-[[3,4,5-tris(ethoxycarbonyloxy)benzoyl]amino]acetic acid

3-(2-氯乙基)咪唑啉-2,4-二酮

2-[(4-cyanobenzoyl)amino]acetic acid