4I54:
reference: Structure-Based Design and Synthesis of an HIV-1 Entry Inhibitor Exploiting X-Ray and Thermodynamic Characterization., Lalonde JM, Le-Khac M, Jones DM, Courter JR, Park J, Schon A, Princiotto AM, Wu X, Mascola JR, Freire E, Sodroski J, Madani N, Hendrickson WA, Smith AB 3rd, ACS Med Chem Lett. 2013 Mar 14;4(3):338-343. PMID: 23667716

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