2JIW:
reference: A 1-acetamido derivative of 6-epi-valienamine: an inhibitor of a diverse group of beta-N-acetylglucosaminidases., Scaffidi A, Stubbs KA, Dennis RJ, Taylor EJ, Davies GJ, Vocadlo DJ, Stick RV, Org Biomol Chem. 2007 Sep 21;5(18):3013-9. Epub 2007 Aug 15. PMID: 17728868

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