4E4X:
reference: The discovery of potent and selective pyridopyrimidin-7-one based inhibitors of B-Raf(V600E) kinase., Ren L, Ahrendt KA, Grina J, Laird ER, Buckmelter AJ, Hansen JD, Newhouse B, Moreno D, Wenglowsky S, Dinkel V, Gloor SL, Hastings G, Rana S, Rasor K, Risom T, Sturgis HL, Voegtli WC, Mathieu S, Bioorg Med Chem Lett. 2012 May 15;22(10):3387-91. Epub 2012 Apr 10. PMID: 22534450

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