2UWP:
reference: Selective and dual action orally active inhibitors of thrombin and factor Xa., Young RJ, Brown D, Burns-Kurtis CL, Chan C, Convery MA, Hubbard JA, Kelly HA, Pateman AJ, Patikis A, Senger S, Shah GP, Toomey JR, Watson NS, Zhou P, Bioorg Med Chem Lett. 2007 May 15;17(10):2927-30. Epub 2007 Mar 30. PMID: 17420122

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