38160-27-9 Piperazine, 1-((1-(4-ethoxyphenyl)-2-methyl-5-oxo-3-pyrrolidinyl)carbonyl)-, hydrochloride, cis- cis-p-Ethoxyphenyl-1 oxo-2 piperazinocarbonyl-4 methyl-5 pyrrolidine chlorhydrate [French]