1. (a) https://www.drugbank.ca/drugs/DB07505.
2. (b) http://www.rcsb.org/pdb/explore.do?structureId=3BHE.
3. (c) https://pdbj.org/emnavi/quick.php?id=Chem-BZN.
4. (d) http://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/BZN.
5. (e) https://pubchem.ncbi.nlm.nih.gov/compound/25113136#section=Top.