6B98:
reference: The identification of a novel lead class for phosphodiesterase 2 inhibition by fragment-based drug design., Forster AB, Abeywickrema P, Bunda J, Cox CD, Cabalu TD, Egbertson M, Fay J, Getty K, Hall D, Kornienko M, Lu J, Parthasarathy G, Reid J, Sharma S, Shipe WD, Smith SM, Soisson S, Stachel SJ, Su HP, Wang D, Berger R, Bioorg Med Chem Lett. 2017 Dec 1;27(23):5167-5171. doi:, 10.1016/j.bmcl.2017.10.054. Epub 2017 Oct 23. PMID: 29113762

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