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Chemical structures of 13 components. (a) Hyperoside. (b) Caffeic acid. (c) Rutin. (d) Chlorogenic acid. (e) Isoquercitrin. (f) Isorhamnetin-3-O-glucoside. (g) Astragalin. (h) Apigenin. (i) Luteolin. (j) Kaempferol (k) Quercetin. (l) Cryptochlorogenic acid. (m) Quercitrin.
