CAS No:161477-96-1||Chemical Formula:C23H27N5O7S||Molecular Weight:517.55700 ||Exact Mass:517.16312 ||(2S,5R,6R)-6-((R)-2-(4-ethyl-2,3-dioxopiperazine-1-carboxamido)-2-phenylacetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid