CAS No: 64953-12-4 | Chemical Formula: C20H18N6Na2O9S | sodium (6R,7R)-7-(2-carboxylato-2-(4-hydroxyphenyl)acetamido)-7-methoxy-3-((1-methyl-1H-tetrazol-5-ylthio)methyl)-8-oxo-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
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