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. 2021 Sep 25;29(8):12336–12346. doi: 10.1007/s11356-021-16427-4

Fig. 1.

Fig. 1

3D binding modes of drugs with the highest binding scores with COVID-19 main protease enzyme (pdb: 5R7Y). a Polymyxin B. b Rifampicin. c Dequalinium chloride. d Chlorhexidine