3,4-bis(1H-indol-3-yl)-1H-pyrrole-2,5-dicarboxylic acid

1',2'-dihyro-dispiro[cyclopropane-1,1'-1H-indene-3',1-cyclopropane]-2'-one

双吲哚马来酰亚胺 IV

6,7,12,13-tetrahydro-5,7-dioxo-5H-indolo[2,3-a]furo[3,4-c]carbazole

12,13-dihydro-4cH-indolo[2,3-a]pyrrolo[3,4-c]carbazole-5,7(6H,7aH)-dione