Piperacillin Methyl Ester

Chemical Name: methyl (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-carboxylate

Smile: O=C([C@@H]1N(C2=O)[C@]([C@@H]2NC([C@@H](C3=CC=CC=C3)NC(N(CCN(CC)C4=O)C4=O)=O)=O)([H])SC1(C)C)OC