5TT3:
reference: Structure-Activity Relationship for Sulfonamide Inhibition of Helicobacter pylori alpha-Carbonic Anhydrase., Modak JK, Liu YC, Supuran CT, Roujeinikova A, J Med Chem. 2016 Dec 22;59(24):11098-11109. doi: 10.1021/acs.jmedchem.6b01333., Epub 2016 Dec 8. PMID: 28002963

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