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The pharmacophore models for the selected 9 flavonoids and 5 organic acid drugs. (A) The GALAHAD model for flavonoids included four hydrogen-bond acceptor atoms (green), two hydrogen-bond donor atoms (magenta), and three hydrophobic centers (cyan); (B) The GALAHAD model for selected drugs included one negative center (blue) and one hydrophobic center (cyan). The sphere sizes indicated query tolerances.
