4UX4:
reference: Structure-based design, synthesis and evaluation in vitro of arylnaphthyridinones, arylpyridopyrimidinones and their tetrahydro derivatives as inhibitors of the tankyrases., Kumpan K, Nathubhai A, Zhang C, Wood PJ, Lloyd MD, Thompson AS, Haikarainen T, Lehtio L, Threadgill MD, Bioorg Med Chem. 2015 Jul 1;23(13):3013-32. doi: 10.1016/j.bmc.2015.05.005. Epub , 2015 May 13. PMID: 26026769

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