3KL6:
reference: Discovery of a tetrahydropyrimidin-2(1H)-one derivative (TAK-442) as a potent, selective, and orally active factor Xa inhibitor., Fujimoto T, Imaeda Y, Konishi N, Hiroe K, Kawamura M, Textor GP, Aertgeerts K, Kubo K, J Med Chem. 2010 May 13;53(9):3517-31. PMID: 20355714

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