(6R,7R)-7-((Z)-2-(2-amino-4-thiazolyl)-2-hydroxyiminoacetamido)-8-oxo-3-(1,2,3-triazol-5-yl)thiomethylthio-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid
(6r,7r)-7-((z)-2-(2-amino-4-thiazolyl)-2-hydroxyiminoacetamido)-8-oxo-3-(1,2,3-triazol-5-yl)thiomethylthio-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid