1-((5-Oxo-1-phenyl-3-pyrrolidinyl)carbonyl)piperazine hydrochloride 38160-15-5 Phenyl-1 oxo-2 piperazinocarbonyl-4 pyrrolidine chlorhydrate [French] Piperazine, 1-((5-oxo-1-phenyl-3-pyrrolidinyl)carbonyl)-, hydrochloride