1H-indene-1,3(2H)-dione, 2-[(4-methylphenyl)methylene]- 2-(4-methylbenzylidene)-1H-indene-1,3(2H)-dione InChI=1/C17H12O2/c1-11-6-8-12(9-7-11)10-15-16(18)13-4-2-3-5-14(13)17(15)19/h2-10H,1H