4DHL:
reference: Identification of purple acid phosphatase inhibitors by fragment-based screening: promising new leads for osteoporosis therapeutics., Feder D, Hussein WM, Clayton DJ, Kan MW, Schenk G, McGeary RP, Guddat LW, Chem Biol Drug Des. 2012 Nov;80(5):665-74. doi: 10.1111/cbdd.12001. Epub 2012 Sep, 3. PMID: 22943065

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