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3,3-dimethyl-3a,4,5,6-tetrahydro-2-benzofuran-1(3H)-one 3,3-dimethyl-3a,4,5,6-tetrahydroisobenzofuran-1-one 3,3-dimethyl-3a,4,5,6-tetrahydro-2-benzofuran-1-one 3,3-dimethyl-3a,4,5,6-tetrahydro-2-benzofuran-1-on 3,3-diméthyl-3a,4,5,6-tetrahydro-2-benzofuran-1-one 3,3-ジメチル-3a,4,5,6-テトラヒドロ-2-ベンゾフラン-1-オン
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