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9-acetyl-1-methyl-4,9-dihydro-1H-pyrano[5,4-b]indol-3-one 9-acetyl-1-methyl-1,4-dihydropyrano[5,4-b]indol-3-one 9-ethanoyl-1-methyl-1,4-dihydropyrano[5,4-b]indol-3-one 9-acetyl-1-methyl-1,4-dihydropyrano[3,4-b]indol-3-on 9-acétyl-1-méthyl-1,4-dihydropyrano[3,4-b]indol-3-one 9-アセチル-1-メチル-1,4-ジヒドロピラノ[3,4-b]インドル-3-オン
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