5DQF:
reference: Crystal structure of equine serum albumin in complex with cetirizine reveals a novel drug binding site., Handing KB, Shabalin IG, Szlachta K, Majorek KA, Minor W, Mol Immunol. 2016 Feb 17;71:143-151. doi: 10.1016/j.molimm.2016.02.003. PMID: 26896718

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