Piperacillinylamplicillin (Open Ring)

NA

(2S,5R,6R)-6-{(2R)-2-(2-[(4S)-4-Carboxy-5,5-Dimethylthiazolidin-2-yl]-2-[(R)-2-(4-ethyl-2,3-dioxopiperazine-1-carboxamido)-2-phenylacetamido]acetamido)-2-phenylacetamido}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic Acid; [(4-Ethyl-2,3-dioxopiperazin-1-yl)carbonyl] Ampicillin Dimer; (2S,5R,6R)-6-((2R)-2-(2-((4S)-4-Carboxy-5,5-dimethylthiazolidin-2-yl)-2-((R)-2-(4-ethyl-2,3-dioxopiperazine-1-carboxamido)-2-phenylacetamido)acetamido)-2-phenylacetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic Acid;