6DCY:
reference: Structure-Activity Relationships in Metal-Binding Pharmacophores for Influenza Endonuclease., Credille CV, Dick BL, Morrison CN, Stokes RW, Adamek RN, Wu NC, Wilson IA, Cohen SM, J Med Chem. 2018 Oct 31. doi: 10.1021/acs.jmedchem.8b01363. PMID: 30351002

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