3R8H:
reference: Crystal structures of three classes of non-steroidal anti-inflammatory drugs in complex with aldo-keto reductase 1C3., Flanagan JU, Yosaatmadja Y, Teague RM, Chai MZ, Turnbull AP, Squire CJ, PLoS One. 2012;7(8):e43965. doi: 10.1371/journal.pone.0043965. Epub 2012 Aug 28. PMID: 22937138

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