InChI=1/C19H17FN2O4/c1-9-7-13(23)16(18(25)21-9)15(11-5-3-4-6-12(11)20)17-14(24)8-10(2)22-19(17)26/h3-8,15H,1-2H3,(H2,21,23,25)(H2,22,24,26)/p-2/fC19H15FN2O4/h21-22H/q-2 90C4C3B1027D3A7A