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Various three-dimensional interactions of ligands with COVID-19 main protease (6LU7) via Hydrogen Bond. A: 6-Glucopyranosylprocyanidin B1; B: Cinnamtannin B1; C: Kaempferol 3-alpha-L-arabinofuranoside-7-rhamnoside-3; D: Pavetannin C1; E: Proanthocyanidin-A2; F: Procyanidin_B7; G: Tenufolin.
