4JIY:
reference: Binding of a Designed Anti-cancer Drug to the Central Cavity of an RNA Three-Way Junction., Phongtongpasuk S, Paulus S, Schnabl J, Sigel RK, Spingler B, Hannon MJ, Freisinger E, Angew Chem Int Ed Engl. 2013 Aug 23. doi: 10.1002/anie.201305079. PMID: 24039102

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