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(2007/10/02)epi-Secopenicillin
Diphenylmethyl-2-(3R,4R-3-benzamido-4-chlor-2-oxo-azetidin-1-yl)-3-chlormethyl-3-butenoat
6-epipenicillin sulfoxide
(R)-3-chloromethyl-2-((1R)-7-oxo-3-phenyl-(1rH,5cH)-4-oxa-2,6-diaza-bicyclo[3.2.0]hept-2-en-6-yl)-but-3-enoic acid benzhydryl ester
(R)-3-Hydroxymethyl-2-((1R,5S)-7-oxo-3-phenyl-4-oxa-2,6-diaza-bicyclo[3.2.0]hept-2-en-6-yl)-but-3-enoic acid benzhydryl ester
(2R,6R,7R)-7-Benzoylamino-3-methylene-8-oxo-5-oxa-1-aza-bicyclo[4.2.0]octane-2-carboxylic acid benzhydryl ester
(6R,7R)-7-Benzoylamino-3-chloromethyl-8-oxo-5-oxa-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester
(2S,6R,7R)-7-Benzoylamino-3-chloro-3-chloromethyl-8-oxo-5-oxa-1-aza-bicyclo[4.2.0]octane-2-carboxylic acid benzhydryl ester