InChI=1/C15H19FN4O/c1-18-15(21)10-20-7-5-11(6-8-20)19-14-4-2-3-13(16)12(14)9-17/h2-4,11,19H,5-8,10H2,1H3,(H,18,21)/f/h18H 2DF59B23F99F63C2