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Chemical structures of phenolics with pharmacological potential: (a) resveratrol; (b) coumarin; (c) sparstolonin B; (d) curcumin; (e) o-vanillin; (f) honokiol; (g) salvianolic acid B; (h) tea polyphenol; (i) pigallocatechin-3-gallate; (j) gallic acid; (k) sesamin.
