5HCH:
reference: X-ray structure of a lectin-bound DNA duplex containing an unnatural phenanthrenyl pair., Roethlisberger P, Istrate A, Marcaida Lopez MJ, Visini R, Stocker A, Reymond JL, Leumann CJ, Chem Commun (Camb). 2016 Feb 22. PMID: 26898721

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