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?? ???? >6-[4-(3-Furyl)octahydro-4a-methyl-8-methylene-2-oxooxireno[d][2]benzopyran-7-yl]-2,2,6-trimethyl-3-oxocyclohexaneacetic acid methyl ester
6-[4-(3-Furyl)octahydro-4a-methyl-8-methylene-2-oxooxireno[d][2]benzopyran-7-yl]-2,2,6-trimethyl-3-oxocyclohexaneacetic acid methyl ester
6-[4-(3-Furyl)octahydro-4a-methyl-8-methylene-2-oxooxireno[d][2]benzopyran-7-yl]-2,2,6-trimethyl-3-oxocyclohexaneacetic acid methyl ester ??
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6-[4-(3-Furyl)octahydro-4a-methyl-8-methylene-2-oxooxireno[d][2]benzopyran-7-yl]-2,2,6-trimethyl-3-oxocyclohexaneacetic acid methyl ester C??? ??, ??, ??
6-[4-(3-Furyl)octahydro-4a-methyl-8-methylene-2-oxooxireno[d][2]benzopyran-7-yl]-2,2,6-trimethyl-3-oxocyclohexaneacetic acid methyl ester ?? ?? ? ???
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6-[4-(3-Furyl)octahydro-4a-methyl-8-methylene-2-oxooxireno[d][2]benzopyran-7-yl]-2,2,6-trimethyl-3-oxocyclohexaneacetic acid methyl ester ?? ??
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