1H-Pyrrole-2,5-dione, 3-(1H-indol-3-yl)-4-[1-[2-(1-methyl-2-pyrrolidinyl)ethyl]-1H-indol-3-yl]-;3-(1H-Indol-3-yl)-4-{1-[2-(1-methyl-2-pyrrolidinyl)ethyl]-1H-indol-3-yl}-1H-pyrrole-2,5-dione;3-(1H-indol-3-yl)-4-{1-[2-(1-methylpyrrolidin-2-yl)ethyl]-1H-indol-3-yl}-1H-pyrrole-2,5-dione