178D:
reference: Crystal structure of a DNA duplex containing 8-hydroxydeoxyguanine-adenine base pairs., McAuley-Hecht KE, Leonard GA, Gibson NJ, Thomson JB, Watson WP, Hunter WN, Brown T, Biochemistry 1994 Aug 30;33(34):10266-70. PMID: 8068665

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