7-Hydroxy-4-oxo-4H-1-benzylpyran-2-carboxylicacid ethyl ester; Ethyl 7-hydroxy-4-oxo-4H-1-benzopyran-2-carboxylate; Ethyl7-hydroxy-4-oxo-4H-chromen-2-carboxylate; Ethyl7-hydroxy-4-oxo-4H-chromene-2-carboxylate; Ethyl 7-hydroxychromon-2-carboxylate
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