| 英文名称: | | 4-b)pyran-4-carboxylic acid, 5,7-dihydro-2,2-dimethyl-7-oxo-2h-furo( | | 5,7-dihydro-2,2-dimethyl-7-oxo-2h-furo(3,4-b)pyran-4-carboxylic acid | | acide dimethyl-4,4 oxo-1 (4,7h) furo(3,4-b)pyranne carboxylique-6 | | 4-b)pyran-4-carboxylic acid,5,7-dihydro-2,2-dimethyl-7-oxo-2h-furo( |
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