sodium 6-(2-(2-(4-formyl-1-piperazinyl)-5,8-dihydro-5-oxopyrido-(2,3)pyrimidine-6-carboxamido)-4-hydroxyphenylacetamido)-penicillanate
sodium 6-(2-(2-(4-formyl-1-piperazinyl)-5,8-dihydro-5-oxopyrido-(2,3)pyrimidine-6-carboxamido)-4-hydroxyphenylacetamido)-penicillanate