SARS-CoV-2(53) COVID-19(40) Compound(24) Treatment(22) antiviral activity(22) Antiviral(21) molecular docking(20) addition(20) coronavirus(20) polysaccharide(19) in vitro(18) drug(18) seaweed(17) Research(16) protease(15) acute respiratory syndrome(15) Infection(15) Potential(14) screened(14) evaluated(13) RBD(13) Interaction(13) Sargassum(13) activity(12) Virtual screening(12) inhibitor(12) receptor(12) binding(12) exhibited(12) Effect(11)