| 英文名称: | | 4,6-dihydro-3,4-dimethyl-5-fluoro-8-hydroxy-3h-2-benzopyran-7-carboxylic aci | | 6-oxo- | | 4,6-dihydro-3,4-dimethyl-5-fluoro-8-hydroxy-6-oxo-3h-2-benzopyran-7-carb oxyl | | 4,6-dihydro-3,4-dimethyl-5-fluoro-8-hydroxy-6-oxo-3h-2-benzopyran-7-carboxylic aci |
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