1-Piperazinecarboxylic acid, 4-(5-oxo-5H-dibenzo(a,d)cyclohepten-10-yl)-, phenyl ester 4-(5-Oxo-5H-dibenzo(a,d)cyclohepten-10-yl)-1-piperazinecarboxylic acid phenyl ester 56972-87-3 Phenyl 4-(5-oxo-5H-dibenzo(a,d)cyclohepten-10-yl)-1-piperazinecarboxylate RMI 61205