1H-indene-1,3(2H)-dione, 2-[(methylamino)methylene]- 2-[(methylamino)methylene]-1H-indene-1,3(2H)-dione InChI=1/C11H9NO2/c1-12-6-9-10(13)7-4-2-3-5-8(7)11(9)14/h2-6,12H,1H