2'-amino-7-(diethylamino)-4'-methyl-2,5'-dioxo-5',6',7',8'-tetrahydro-2H,4'H-4,7'-bichromene-3'-carbonitrile
2'-amino-7-(diethylamino)-4'-methyl-2,5'-dioxo-5',6',7',8'-tetrahydro-2h,4'h-4,7'-bichromene-3'-carbonitrile