3-(ACETOXYMETHYL)-7-(2-((CYANOMETHYL)THIO)ACETAMIDO)-7-METHOXY-8-OXO-5-THIA-1-AZABICYCLO(4.2.0)OCT-2-ENE-2-CARBOXYLIC ACID, (6R,7S)-
3-(acetoxymethyl)-7-(2-((cyanomethyl)thio)acetamido)-7-methoxy-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, (6r,7s)-