InChI=1S/C17H19FN4O4/c1-8(23)15(19)16-21-12(17(26)22(16)7-13(24)25)5-9-6-20-11-4-2-3-10(18)14(9)11/h2-4,6,8,15,20,23,26H,5,7,19H2,1H3,(H,24,25)/t8-,15-/m0/s1