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(6E,14E)-12-hydroxy-2-{[(5-hydroxy-3,4-dimethoxy-6-methyltetrahydro-2H-pyran-2-yl)oxy]methyl}-9-[(3-hydroxy-4-methoxy-6-methyltetrahydro-2H-pyran-2-yl)oxy]-3,8,10,12-tetramethyl-4,17-dioxabicyclo[14.1 related products: