4OQD:
reference: Production of a novel N-monomethylated dideoxysugar., Thoden JB, Holden HM, Biochemistry. 2014 Feb 25;53(7):1105-7. doi: 10.1021/bi500098a. Epub 2014 Feb 11. PMID: 24512254

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