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?? ???? >(R)-6,9-Dihydro-7-hydroxy-7-methyl-2-(1-methylethylidene)-7H-furo[3,2-h][2]benzopyran-3(2H)-one
(R)-6,9-Dihydro-7-hydroxy-7-methyl-2-(1-methylethylidene)-7H-furo[3,2-h][2]benzopyran-3(2H)-one
(R)-6,9-Dihydro-7-hydroxy-7-methyl-2-(1-methylethylidene)-7H-furo[3,2-h][2]benzopyran-3(2H)-one ??
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(R)-6,9-Dihydro-7-hydroxy-7-methyl-2-(1-methylethylidene)-7H-furo[3,2-h][2]benzopyran-3(2H)-one C??? ??, ??, ??
(R)-6,9-Dihydro-7-hydroxy-7-methyl-2-(1-methylethylidene)-7H-furo[3,2-h][2]benzopyran-3(2H)-one ?? ?? ? ???
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(R)-6,9-Dihydro-7-hydroxy-7-methyl-2-(1-methylethylidene)-7H-furo[3,2-h][2]benzopyran-3(2H)-one ?? ??
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