26863-99-0 4-Pyridinecarboxamide, N-(10,11-dihydro-5H-dibenzo(a,d)cyclohepten-5-yl)- N-(10,11-Dihydro-5H-dibenzo(a,d)cyclohepten-5-yl)-4-pyridinecarboxamide N-(Dibenzo(2,3:6,7)cycloheptadien-5-yl)isonicotinamide [French]