cas no: 134237-56-2 ||chemical formula:c25h23clf2n2o6s||molecular weight:552.97473||exact mass:552.09334||(6r,7r)-benzhydryl 3-(chloromethyl)-7-((1-(((z)-2-chlorovinyl)oxy)-2-((difluoromethyl)thio)ethyl)amino)-7-methoxy-8-oxo-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
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