84852-27-7 EINECS 284-338-6 N,N'-(5,6,7,12,17,18,19,24-Octahydro-5,7,12,17,19,24-hexaoxodinaphtho(2,3-i:2',3'-i')benzo(1,2-a:4,5-a')dicarbazole-1,13-diyl)bis(benzamide)