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(2007/10/02)6-epipenicillin sulfoxide
(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
Diphenylmethyl-2-(3R,4R-3-benzamido-4-chlor-2-oxo-azetidin-1-yl)-3-chlormethyl-3-butenoat
(R)-3-Nitrooxymethyl-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
(R)-2-((1R,5S)-7-Oxo-3-phenyl-4-oxa-2,6-diaza-bicyclo[3.2.0]hept-2-en-6-yl)-3-phenylsulfanylmethyl-but-3-enoic acid benzhydryl ester