4FE6:
reference: Enamino-oxindole HIV protease inhibitors., Eissenstat M, Guerassina T, Gulnik S, Afonina E, Silva AM, Ludtke D, Yokoe H, Yu B, Erickson J, Bioorg Med Chem Lett. 2012 Jun 7. PMID: 22749283

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).