| 4YHQ: reference: Substituted Bis-THF Protease Inhibitors with Improved Potency against Highly Resistant Mature HIV-1 Protease PR20., Agniswamy J, Louis JM, Shen CH, Yashchuk S, Ghosh AK, Weber IT, J Med Chem. 2015 Jun 4. PMID: 26010498 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).