3CPC:
reference: Discovery of Aryl Aminoquinazoline Pyridones as Potent, Selective, and Orally Efficacious Inhibitors of Receptor Tyrosine Kinase c-Kit., Hu E, Tasker A, White RD, Kunz RK, Human J, Chen N, Burli R, Hungate R, Novak P, Itano A, Zhang X, Yu V, Nguyen Y, Tudor Y, Plant M, Flynn S, Xu Y, Meagher KL, Whittington DA, Ng GY, J Med Chem. 2008 Jun 12;51(11):3065-8. Epub 2008 May 1. PMID: 18447379

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