dibenzo[a,d]cycloheptane, Dibenzocycloheptadiene, 10,11-Dihydro-5H-dibenzo[a,d]cycloheptene, Dibenzocycloheptene, 5H-Dibenzo[a,d]cycloheptene,10,11-dihydro, 5H-Dibenzo[a,d]cycloheptene, 10,11-dihydro-, 1,2,4,5-dibenzocycloheptane, 10,11-dihydro-5h-dibenzo[a,d][7]annulene, dibenzosuberane