Human Dck C4S-S74E Mutant In Complex With Udp And The Inhibitor 8 {2,2'-[{4-[(2R)-4-{[(4,6-Diaminopyrimidin-2-Yl)Sulfanyl]Methyl}-5-Propyl-2,3-Dihydro-1,3-Thiazol-2-Yl]Benzene-1,2-Diyl}Bis(Oxy)]Diethanol}