3HS4:
reference: High-resolution structure of human carbonic anhydrase II complexed with acetazolamide reveals insights into inhibitor drug design., Sippel KH, Robbins AH, Domsic J, Genis C, Agbandje-McKenna M, McKenna R, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2009 Oct 1;65(Pt, 10):992-5. Epub 2009 Sep 25. PMID: 19851004

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