3G8O:
reference: Rational design of orally-active, pyrrolidine-based progesterone receptor partial agonists., Thompson SK, Washburn DG, Frazee JS, Madauss KP, Hoang TH, Lapinski L, Grygielko ET, Glace LE, Trizna W, Williams SP, Duraiswami C, Bray JD, Laping NJ, Bioorg Med Chem Lett. 2009 Aug 15;19(16):4777-80. Epub 2009 Jun 17. PMID: 19595590

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