CAS No:N/A ||Chemical Formula:C23H27N5O9S ||Molecular Weight:549.55500 ||Exact Mass:549.15295 ||(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 4,4-dioxide