CAS No:37091-66-0 ||Chemical Formula:C20H23N5O6S ||Molecular Weight:461.49300 ||Exact Mass:461.13690 ||EINECS:253-348-2||(2S,5R,6R)-3,3-dimethyl-7-oxo-6-(2-(2-oxoimidazolidine-1-carboxamido)-2-phenylacetamido)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid