4NKS:
reference: FGFR1 Kinase Inhibitors: Close Regioisomers Adopt Divergent Binding Modes and Display Distinct Biophysical Signatures., Klein T, Tucker J, Holdgate GA, Norman RA, Breeze AL, ACS Med Chem Lett. 2013 Dec 6;5(2):166-71. doi: 10.1021/ml4004205. eCollection, 2014 Feb 13. PMID: 24900792

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