COVID-19(23) inhibitor(22) SARS-CoV-2(18) protease(12) caused(10) Replication(9) Antiviral(9) effective(9) SARS-CoV(9) Compound(9) enzyme(8) approach(8) docking(8) coronavirus(8) inhibitory activity(7) FRET(7) drug(7) screened(7) virus(7) proteolytic activity(6) COVID-19 pandemic(6) Virtual screening(6) Treatment(6) therapeutic(6) Coronavirus disease 2019(6) acute respiratory syndrome(6) feature(6) Interaction(6) Drug discovery(6) 3CLpro(6)