3VQS:
reference: Preclinical Characterization of JTK-853, a Novel Nonnucleoside Inhibitor of the Hepatitis C Virus RNA-Dependent RNA Polymerase., Ando I, Adachi T, Ogura N, Toyonaga Y, Sugimoto K, Abe H, Kamada M, Noguchi T, Antimicrob Agents Chemother. 2012 Aug;56(8):4250-6. Epub 2012 May 21. PMID: 22615294

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