2-methoxycarbonyl-4H-imidazo(2,1-c)(1,4)benzoxazine-1-carboxylic acid

4H-imidazo[2,1-c][1,4]benzoxazine-2-carboxylic acid

methyl 2-(chloroacetamido)-2-[2-oxo-2H-1,4-benzoxazin-3-yl]acetate

methyl 4H-imidazo<2,1-c><1,4>benzoxazine-2-carboxylate