4H4M:
reference: Crystal Structures of HIV-1 Reverse Transcriptase with Picomolar Inhibitors Reveal Key Interactions for Drug Design., Frey KM, Bollini M, Mislak AC, Cisneros JA, Gallardo-Macias R, Jorgensen WL, Anderson KS, J Am Chem Soc. 2012 Nov 19. PMID: 23163887

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