103952-81-4 2,3-Dihydro-2-(3,4-dimethoxyphenyl)-3-(4-nitrobenzoyl)-4H-1,3-benzoxazin-4-one 4H-1,3-Benzoxazin-4-one, 2,3-dihydro-2-(3,4-dimethoxyphenyl)-3-(4-nitrobenzoyl)-