5DUX:
reference: Structural characterisation of human galectin-4 N-terminal carbohydrate recognition domain in complex with glycerol, lactose, 3'-sulfo-lactose, and 2'-fucosyllactose., Bum-Erdene K, Leffler H, Nilsson UJ, Blanchard H, Sci Rep. 2016 Feb 1;6:20289. doi: 10.1038/srep20289. PMID: 26828567

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