1-((1-(2-Methoxyphenyl)-5-oxo-3-pyrrolidinyl)carbonyl)piperazine monohydrochloride 38160-10-0 Piperazine, 1-((1-(2-methoxyphenyl)-5-oxo-3-pyrrolidinyl)carbonyl)-, monohydrochloride o-Methoxyphenyl-1 oxo-2 piperazinocarbonyl-4 pyrrolidine chlorhydrate [French]