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Chemical structures of flavonoids from Agrimonia pilosa Ledeb. 1. catechin, 2. taxifolin, 3. kaempferol, 4. apigenin, 5. luteolin, 6. quercetin, 7. quercitrin, 8. hyperoside, 9. rutin, 10. tiliroside, 11. kaempferol-3-O-glucoside 12. luteolin-7-O-β-glucoside, 13. vitexin, 14. isovitexin.
