benzyl (2S,5R,6R)-6-amino-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate

6β-(4-nitro-benzylideneamino)-penicillanic acid benzyl ester

3-cyclohexyloxy-carbonyl-imidazolidin-2-on-1-carbonyl chloride

氨苄西林

Sodium 2-(2-aminothiazol-4-yl)-(Z)-2-(4-methylenecyclohexyloxyimino)acetate