InChI=1/C18H15FN2O4/c19-12-3-1-2-4-14(12)21-17(22)10-13(18(21)23)20-11-5-6-15-16(9-11)25-8-7-24-15/h1-6,9,13,20H,7-8,10H2/t13-/m1/s1 4C9B0FF67854E4FA