5WG7:
reference: "Seriously Sweet": Acesulfame K Exhibits Selective Inhibition Using Alternative Binding Modes in Carbonic Anhydrase Isoforms., Murray AB, Lomelino CL, Supuran CT, McKenna R, J Med Chem. 2018 Jan 5. doi: 10.1021/acs.jmedchem.7b01470. PMID: 29266943

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