5GHK:
reference: Artificial Blood for Dogs., Yamada K, Yokomaku K, Kureishi M, Akiyama M, Kihira K, Komatsu T, Sci Rep. 2016 Nov 10;6:36782. doi: 10.1038/srep36782. PMID: 27830776

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