1H-indene-1,3(2H)-dione, 2-[(dimethylamino)methylene]- 2-[(dimethylamino)methylene]-1H-indene-1,3(2H)-dione 28752-91-2 InChI=1/C12H11NO2/c1-13(2)7-10-11(14)8-5-3-4-6-9(8)12(10)15/h3-7H,1-2H