2XPK:
reference: Cell-penetrant, nanomolar O-GlcNAcase inhibitors selective against lysosomal hexosaminidases., Dorfmueller HC, Borodkin VS, Schimpl M, Zheng X, Kime R, Read KD, van Aalten DM, Chem Biol. 2010 Nov 24;17(11):1250-5. PMID: 21095575

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