3GDD:
reference: Structure of a stacked anthraquinone-DNA complex., De Luchi D, Uson I, Wright G, Gouyette C, Subirana JA, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2010 Sep 1;66(Pt, 9):1019-22. Epub 2010 Aug 21. PMID: 20823516

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