1-(5-Oxo-5H-dibenzo(a,d)cyclohepten-10-yl)-4-(3-pyridinylcarbonyl)piperazine 56972-91-9 Piperazine, 1-(5-oxo-5H-dibenzo(a,d)cyclohepten-10-yl)-4-(3-pyridinylcarbonyl)- RMI 61223