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The docking mode of polyphenols present in Geranii Herba (Geraniaceae) with the SARS-CoV-2 spike receptor-binding domain (RBD). (a) The 9 polyphenols are retained in the cavity of the surface region of the RBD. (b) Ellagic acid. (c) Kaempferol 7-O-rhamnoside. (d) Corilagin. (e) Kaempferol. (f) Geraniin. (g) Kaempferitrin. (h) Protocatechuic acid. (i) Gallic acid. (j) Quercetin.
