4RSZ:
reference: The X-ray structure of the primary adducts formed in the reaction between cisplatin and cytochrome c., Ferraro G, Messori L, Merlino A, Chem Commun (Camb). 2015 Jan 29;51(13):2559-61. doi: 10.1039/c4cc09056j. PMID: 25567806

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