6DA2:
reference: Structure-activity relationships of rationally designed ritonavir analogs: Impact of side-group stereochemistry, head-group spacing, and backbone composition on the interaction with CYP3A4., Samuels ER, Sevrioukova I, Biochemistry. 2019 Mar 26. doi: 10.1021/acs.biochem.9b00156. PMID: 30912932

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