2HL4:
reference: Carbonic anhydrase inhibitors: binding of an antiglaucoma glycosyl-sulfanilamide derivative to human isoform II and its consequences for the drug design of enzyme inhibitors incorporating sugar moieties., Di Fiore A, Scozzafava A, Winum JY, Montero JL, Pedone C, Supuran CT, De Simone G, Bioorg Med Chem Lett. 2007 Mar 15;17(6):1726-31. Epub 2007 Jan 8. PMID: 17251017

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