InChI=1S/C19H19FN4O4/c1-27-17-6-4-13(24(25)26)7-12(17)8-14(16-10-22-19(21)23-16)11-3-5-18(28-2)15(20)9-11/h3-7,9-10,14H,8H2,1-2H3,(H3,21,22,23)/t14-/m0/s1