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(2007/10/02)(6R)-7c-benzoylamino-3-methyl-8-oxo-(6rH)-5-oxa-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic 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)-3-Methyl-8-oxo-7-[2,2,2-trichloro-eth-(E)-ylideneamino]-5-oxa-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester
(R)-7-[(Z)-2,2-Dichloro-vinylimino]-3-methyl-8-oxo-5-oxa-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester
(6R,7S)-7-(2,2-Dichloro-vinylamino)-3-methyl-8-oxo-5-oxa-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester
7-Amino-3-methyl-1-oxadethia-cephem-4-carbonsaeure-benzhydrylester