Synonyms: Dibenzo[b,def]chrysene,benzamide deriv.;N,N'-[(7,14-dihydro-7,14-dioxodibenzo[b,def]chrysene-2,9-diyl)bis[imino(9,10-dihydro-9,10-dioxoanthracene-4,1-diyl)]]bis(benzamide);N,N'-{(7,14-Dioxo-7,14-dihydrodibenzo[c,pqr]tetraphene-2,9-diyl)bis[imino(9,10-dioxo-9,10-dihydroanthracene-4,1-diyl)]}dibenzamide;