1'-hydroxy-2,2'-diphenyl-1,2-dihydro-1'H-[2,3']biindolyl-3-one

Benzenamine, 4-methoxy-N-(1-oxido-2-phenyl-3H-indol-3-ylidene)-

3-(2-oxocyclohexyl)-2-phenylindole

1-oxido-N,2-diphenylindol-1-ium-3-imine