英文名称: | 4a,8a-dihydro-7-hydroxy-4-oxo-4h-1-benzopyran-2-carboxylic aci acetate (est | (e)-er | trans-7-hydroxy-4-oxo-4a,8a-dihydro-4h-1-benzopyran-2-carboxylic acid acetate | 4a,8a-dihydro-7-hydroxy-4-oxo-, acetate (ester), (e)-4h-1-benzopyran-2-carboxylic aci |
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