6-Methoxycarbonyl-2H-1,4-benzoxazin-3(4H)-one;Methyl 3-oxo-3,4-dihydro-2H-1,4-benzoxazin-6-carboxylate; Methyl3-oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylate; Methyl3-oxo-3,4-dihydro-2H-benzo[1,4]oxazine-6-carboxylate
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