pheneticillin (2S,5R,6R)-3,3-Dimethyl-7-oxo-6-[(2-phenoxypropionyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 6α-[(1-Oxo-2-phenoxypropyl)amino]penicillanic acid 1-Phenoxyethylpenicillin 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 3,3-dimethyl-7-oxo-6-(2-phenoxypropionamido)- (7CI, 8CI) 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 3,3-dimethyl-7-oxo-6-[(1-oxo-2-phenoxypropyl)amino]-, (2S,5R,6R)- (9CI) 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 3,3-dimethyl-7-oxo-6-[(1-oxo-2-phenoxypropyl)amino]-, [2S-(2a,5a,6b)]- Alfacilin