CAS No:1705612-82-3||Chemical Formula:C20H25N5O7S2 ||Molecular Weight:511.56800 ||Exact Mass:511.11954||(pivaloyloxy)methyl (6R,7R)-7-((E)-2-(2-aminothiazol-4-yl)-2-(methoxyimino)acetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate