5H8X:
reference: Catechol-based matrix metalloproteinase inhibitors with additional antioxidative activity., Tauro M, Laghezza A, Loiodice F, Piemontese L, Caradonna A, Capelli D, Montanari R, Pochetti G, Di Pizio A, Agamennone M, Campestre C, Tortorella P, J Enzyme Inhib Med Chem. 2016 Aug 24:1-13. PMID: 27556138

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