ethyl 4-(4,8-dichloro-5,6-dihydrobenzo[4,5]cyclohepta[1,2-b]pyridin-11-ylidene)piperidine-1-carboxylate

ethyl 4-(4,8-dichloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ylidene)piperidine-1-carboxylate