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?? ???? >(6R,7R)-7-Methoxy-3-[(1-methyl-1H-tetrazol-5-ylthio)methyl]-8-oxo-7-(p-toluoylamino)-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid diphenylmethyl ester
(6R,7R)-7-Methoxy-3-[(1-methyl-1H-tetrazol-5-ylthio)methyl]-8-oxo-7-(p-toluoylamino)-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid diphenylmethyl ester
(6R,7R)-7-Methoxy-3-[(1-methyl-1H-tetrazol-5-ylthio)methyl]-8-oxo-7-(p-toluoylamino)-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid diphenylmethyl ester ??
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(6R,7R)-7-Methoxy-3-[(1-methyl-1H-tetrazol-5-ylthio)methyl]-8-oxo-7-(p-toluoylamino)-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid diphenylmethyl ester C??? ??, ??, ??
(6R,7R)-7-Methoxy-3-[(1-methyl-1H-tetrazol-5-ylthio)methyl]-8-oxo-7-(p-toluoylamino)-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid diphenylmethyl ester ?? ?? ? ???
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(6R,7R)-7-Methoxy-3-[(1-methyl-1H-tetrazol-5-ylthio)methyl]-8-oxo-7-(p-toluoylamino)-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid diphenylmethyl ester ?? ??
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