2H0N:
reference: Structure of the fully modified left-handed cyclohexene nucleic acid sequence GTGTACAC., Robeyns K, Herdewijn P, Van Meervelt L, J Am Chem Soc. 2008 Feb 13;130(6):1979-84. Epub 2008 Jan 17. PMID: 18198873

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