4-Piperidinecarboxamide, N-(2-(4-(5H-dibenzo(a,d)cyclohepten-5-ylidene)-1-piperidinyl)ethyl)-1-formyl-

AT-1015 free base is a carbotricyclic compound that is 5H-dibenzo[a,d][7]annulene substituted by a 1-{2-[(1-formylpiperidine-4-carbonyl)amino]ethyl}piperidin-4-ylidene group at position 5. It has a role as a serotonergic antagonist. It is a secondary carboxamide, an aldehyde, a carbotricyclic compound and a piperidinecarboxamide. It is a conjugate base of an AT-1015(1+).