Crystal Structure Of Human Ddr2 Kinase In Complex With 2-[4,5-Difluoro-2-Oxo-1'-(1H-Pyrazolo[3,4-B]Pyridine-5-Carbonyl)Spiro[Indole-3,4'-Piperidine]-1-Yl]-N-(2,2,2-Trifluoroethyl)Acetamide