204   
Table 6.  Binding energies of WS phytoconstituents with SARS-CoV spike glycoprotein (PDB ID: 5WRG) in comparison to the FDA approved standard reference drugs (Arbidol and Hydroxychloroquine).
   AutoDock v4.2.6  AutoDock vina  iGEMDOCK v2.1
S. No.  Ligands  BE (kcal/mol)   K d  Interacting amino acids  BE(