1W7G:
reference: Design, synthesis and evaluation of graftable thrombin inhibitors for the preparation of blood-compatible polymer materials., Salvagnini C, Michaux C, Remiche J, Wouters J, Charlier P, Marchand-Brynaert J, Org Biomol Chem. 2005 Dec 7;3(23):4209-20. Epub 2005 Oct 19. PMID: 16294249

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