英文别名2-[4-(Diphenylmethyl)-1-piperazinyl]ethyl 3-oxobutanoate ethanedioate (1:1); 2-(4-Benzhydrylpiperazin-1-yl)ethyl 3-oxobutanoate oxalate; 2-(4-benzhydrylpiperazin-1-yl)ethyl 3-oxobutanoate; Manidipine Impurity 1 Oxalate; Butanoic acid, 3-oxo-, 2-[4-(diphenylmethyl)-1-piperazinyl]ethyl ester, ethanedioate (1:1) 
