1-(3-(4-(Diphenylmethyl)-1-piperazinyl)propyl)-5-phenyl-2-piperidinone ethanedioate 109758-34-1 2-Piperidinone, 1-(3-(4-(diphenylmethyl)-1-piperazinyl)propyl)-5-phenyl-, ethanedioate M.G. 16252