5CP6:
reference: An Organometallic Compound which Exhibits a DNA Topology-Dependent One-Stranded Intercalation Mode., Ma Z, Palermo G, Adhireksan Z, Murray BS, von Erlach T, Dyson PJ, Rothlisberger U, Davey CA, Angew Chem Int Ed Engl. 2016 May 17. doi: 10.1002/anie.201602145. PMID: 27184539

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