3BE9:
reference: Structure-based design and synthesis of novel macrocyclic pyrazolo[1,5-a] [1,3,5]triazine compounds as potent inhibitors of protein kinase CK2 and their anticancer activities., Nie Z, Perretta C, Erickson P, Margosiak S, Lu J, Averill A, Almassy R, Chu S, Bioorg Med Chem Lett. 2008 Jan 15;18(2):619-23. Epub 2007 Nov 28. PMID: 18055206

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