| 英文名称: | | 4,7-epoxyisobenzofuran-5-carboxylic acid, octahydro-1,3-dioxo-, ethyl ester, (3 | | 4- beta,5-alpha,7-beta,7a-alpha)-a-alph | | 5-endo-(ethoxycarbonyl)endothall anhydride | | 7-epoxyisobenzofuran-5-carboxylic acid,octahydro-1,3-dioxo-, ethyl ester, (3a-alpha,4-beta,5-alpha,7 |
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