英文别名3-OXO-1,4-BIS(PHENYLMETHYL)-2-PIPERAZINECARBOXYLIC ACID ETHYL ESTER; ethyl 3-oxo-1,4-bis(phenylMethyl)-2-piperazinecarboxylate; Ethyl 1,4-dibenzyl-3-oxo-2-piperazinecarboxylate; 2-Piperazinecarboxylic acid, 3-oxo-1,4-bis(phenylmethyl)-, ethyl ester 
