4JFV:
reference: alpha-L-fucosidase inhibition by pyrrolidine-ferrocene hybrids: rationalization of ligand-binding properties by structural studies., Hottin A, Wright DW, Steenackers A, Delannoy P, Dubar F, Biot C, Davies GJ, Behr JB, Chemistry. 2013 Jul 15;19(29):9526-33. doi: 10.1002/chem.201301001. Epub 2013 Jun, 5. PMID: 23740878

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