ery (Raimondas et al., 2019; Rossell et al., 2017). The MD simulation was run for 3 ns for both SARS-Cov-2 glycoprotein–withanolide A complex and SARS CoV-2 papain like protease-withanolide B complex at 300 K. 2.11.2. Ligand and receptor molecular dynamics (LARMD) online server The MD simulation analyses of SARS-CoV spike glycoprotein (PDB ID: 5WRG) with withanolide B and SARS-Co