Piperacillin Impurity 2

Chemical Name: (2R,4S)-2-((R)-1-((R)-2-(4-ethyl-2,3-dioxopiperazine-1-carboxamido)-2-phenylacetamido)-2-methoxy-2-oxoethyl)-5,5-dimethylthiazolidine-4-carboxylic acid

Smile: O=C([C@@H](C1=CC=CC=C1)NC(N(CCN(CC)C2=O)C2=O)=O)N[C@H](C(OC)=O)[C@@H]3N[C@@H](C(O)=O)C(C)(C)S3