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2,4-dimethoxy-7-propyl-7,8-dihydro-pyrano[3,4-e]pyrimidin-5-one 2,4-dimethoxy-7-propyl-7,8-dihydropyrano[3,4-e]pyrimidin-5-one 2,4-dimethoxy-7-propyl-7,8-dihydropyrano[4,3-d]pyrimidin-5-on 2,4-diméthoxy-7-propyl-7,8-dihydropyrano[4,3-d]pyrimidin-5-one 2,4-ジメトキシ-7-プロピル-7,8-ジヒドロピラノ[4,3-d]ピリミジン-5-オ
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