5U4E:
reference: Stilbene Boronic Acids Form a Covalent Bond with Human Transthyretin and Inhibit Its Aggregation., Smith TP, Windsor IW, Forest KT, Raines RT, J Med Chem. 2017 Sep 18. doi: 10.1021/acs.jmedchem.7b00952. PMID: 28920684

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