| 英文名称: | | 4h,5h-pyrano(4,3-b)pyran-4,5-dione, 2,3,7,8-tetrahydro-2,7-dimethyl | | 2,3,7,8-tetraidro-2,7-dimetil-4h,5h-pirano(4,3-b)piran-4,5-dione | | 2,7-dimethyl-2,3,4,5,7,8-hexahydropyrano(4,3-b)pyran-4,5-dione | | 4h,5h-pyrano(4,3-b)pyran-4,5-dione,2,3,7,8-tetrahydro-2,7-dimethyl |
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