160D:
reference: High resolution crystal structure of the A-DNA decamer d(CCCGGCCGGG). Novel intermolecular base-paired G*(G.C) triplets., Ramakrishnan B, Sundaralingam M, J Mol Biol 1993 May 20;231(2):431-44. PMID: 8510155

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