5-Benzyloxy-4-pyrone-2-carboxylic acid;5-(benzyloxy)-4-oxo-4H-pyran-2-carboxylic acid;6-carboxy-3-benzyloxypyran-4(1H)-one;4-oxo-5-(phenylmethoxy)-4H-pyran-2-carboxylic acid;F2158-0173;
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