2N4M:
reference: Base-Displaced Intercalated Structure of the N-(2'-Deoxyguanosin-8-yl)-3-aminobenzanthrone DNA Adduct., Politica DA, Malik CK, Basu AK, Stone MP, Chem Res Toxicol. 2015 Dec 21;28(12):2253-66. doi:, 10.1021/acs.chemrestox.5b00277. Epub 2015 Dec 7. PMID: 26641105

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