1 770 N-[4-(2-chlorophenyl)-1,3-dioxo-1,2,3,6-tetrahydropyrrolo[3,4-C]carbazol-9-yl]formamide 1.000 2 824 9-hydroxy-4-phenylpyrrolo[3,4-C]carbazole-1,3(2h,6h)-dione 0.828 3 K2C 6,7,12,13-tetrahydro-5h-indolo[2,3-a]pyrrolo[3,4-C]carbazol-5-one 0.793 4 7CK 7-carboxy-5-hydroxy-12,13-dihydro-6h-indolo[2,3-a]pyrrolo[3,4-C]carbazole 0.719 5 KCT (5s)-7-oxo-6,7,12,13-tetrahydro-5h-indolo[2,3-a]pyrrolo[3,4-C]carbazole-5-carboxylic acid 0.719 6 839 3-(9-hydroxy-1,3-dioxo-4-phenyl-2,3-dihydropyrrolo[3,4-C]carbazol-6(1h)-yl)propanoic acid 0.706 7 UCM Rel-(9r,12s)-9,10,11,12-tetrahydro-9,12-epoxy-1h-diindolo[1,2,3-fg:3',2',1'-kl]pyrrolo[3,4-I][1,6]benzodiazocine-1,3(2h)-dione 0.706