InChI=1S/C19H20FN5O5/c1-9(26)21-14-7-24(8-15(14)23-30-2)18-13(20)5-11-16(27)12(19(28)29)6-25(10-3-4-10)17(11)22-18/h5-6,10,14H,3-4,7-8H2,1-2H3,(H,21,26)(H,28,29)/b23-15+