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4H-1-Benzopyran-4-one,3-[2,3-dihydro-2,4,6-trihydroxy-2-[(4-hydroxyphenyl)methyl]-3-oxo-7-benzofuranyl]-2,3-dihydro-5,7-dihydroxy-2-(4-hydroxyphenyl)-,(2R,3S)- related products: