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Chemical structures of dietary flavonoids (a–f) and medicinal compounds (g–m). a. EGCG, b. genestein, c. myricetin, d. kaempferol, e. apigenin, f. quercetin, g. celastrol, h. pristimerin, i. triptolide, j. shikonin, k. withaferin A, l. curcumin, m. gambogic acid.
