6U7C:
reference: A New Paroxetine-Based GRK2 Inhibitor Reduces Internalization of the mu-Opioid Receptor., Bouley RA, Weinberg ZY, Waldschmidt HV, Yen YC, Larsen SD, Puthenveedu MA, Tesmer JJG, Mol Pharmacol. 2020 Mar 31. pii: mol.119.118661. doi: 10.1124/mol.119.118661. PMID: 32234810

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