InChI=1S/C19H20FN5O4/c1-29-23-14-6-24(9-19(14)7-21-8-19)17-13(20)4-11-15(26)12(18(27)28)5-25(10-2-3-10)16(11)22-17/h4-5,10,21H,2-3,6-9H2,1H3,(H,27,28)/b23-14-