1 EL Ellipticine 1.000 2 1EL 9-hydroxy-5,11-dimethyl-4,6-dihydro-1h-pyrido[4,3-B]carbazol-1-one 0.905 3 OA4 5-methyl-6-phenylquinazoline-2,4-diamine 0.727 4 4TT 4,5,6,11-tetrahydro-1h-pyrazolo[4',3':6,7]cyclohepta[1,2-B]indole 0.714 5 ZPI 6,7,8,9-tetrahydro-5~{H}-carbazole-1-carbonitrile 0.700