4M3M:
reference: Synthesis, structure and inhibitory activity of a stereoisomer of oseltamivir carboxylate., Sartori A, Dell'amico L, Battistini L, Curti C, Rivara S, Pala D, Kerry PS, Pelosi G, Casiraghi G, Rassu G, Zanardi F, Org Biomol Chem. 2014 Feb 11;12(10):1561-9. doi: 10.1039/c3ob42069h. PMID: 24425043

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