Proteases represent common targets in combating infectious diseases. including COVID-19. The 3-chymotrypsin-like protease (3CLpro) is a validated molecular target for COVID-19. and it is key for developing potent and selective inhibitors for inhibiting viral replication of SARS-CoV-2. https://www.roneverhart.com/Turbosound-TS-18SW700-8A-18-Low-Frequency-Loudspeaker-p31480/