2YKN:
reference: Difluoromethylbenzoxazole Pyrimidine Thioether Derivatives: A Novel Class of Potent Non-Nucleoside HIV-1 Reverse Transcriptase Inhibitors., Boyer J, Arnoult E, Medebielle M, Guillemont J, Unge J, Jochmans D, J Med Chem. 2011 Dec 8;54(23):7974-85. Epub 2011 Nov 4. PMID: 22017513

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