4Z3V:
reference: Fragment-Based Discovery of a Small Molecule Inhibitor of Bruton's Tyrosine Kinase., Smith CR, Dougan DR, Komandla M, Kanouni T, Knight BM, Lawson JD, Sabat M, Taylor ER, Vu P, Wyrick C, J Med Chem. 2015 Jun 18. PMID: 26087137

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