4Y5H:
reference: Pyridopyrimidinone Derivatives as Potent and Selective c-Jun N-Terminal Kinase (JNK) Inhibitors., Zheng K, Park CM, Iqbal S, Hernandez P, Park H, LoGrasso PV, Feng Y, ACS Med Chem Lett. 2015 Mar 2;6(4):413-8. doi: 10.1021/ml500474d. eCollection, 2015 Apr 9. PMID: 25893042

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