DIPHENYLMETHYL (6R,7R)-3-((METHYLSULFONYL)OXY)-8-OXO-7-((2-PHENYLACETYL)AMINO)-5-THIA-1-AZABICYCLO(4.2.0)OCT-2-ENE-2-CARBOXYLATE
diphenylmethyl (6r,7r)-3-((methylsulfonyl)oxy)-8-oxo-7-((2-phenylacetyl)amino)-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylate