4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-(((((3,5-dioxo-1-piperazinyl)carbonyl)amino)phenylacetyl)amino)-3,3-dimethyl-7-oxo-, (2S-(2-alpha,5-alpha,6-beta(S*)))- 59703-78-5 BRN 1063250 Desethyl-PIPC Desethylpiperacillin