3MXE:
reference: Structure-Based Design, Synthesis, and Structure-Activity Relationship Studies of HIV-1 Protease Inhibitors Incorporating Phenyloxazolidinones., Ali A, Reddy GS, Nalam MN, Anjum SG, Cao H, Schiffer CA, Rana TM, J Med Chem. 2010 Nov 11;53(21):7699-708. PMID: 20958050

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