4E9C:
reference: High-throughput interrogation of ligand binding mode using a fluorescence-based assay., Sledz P, Lang S, Stubbs CJ, Abell C, Angew Chem Int Ed Engl. 2012 Jul 27;51(31):7680-3. doi: 10.1002/anie.201202660., Epub 2012 Jun 22. PMID: 22730171

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