InChI=1/C14H14F4N2O4/c1-2-24-11(21)9-10(7-4-3-5-8(15)6-7)19-12(22)20-13(9,23)14(16,17)18/h3-6,9-10,23H,2H2,1H3,(H2,19,20,22)/t9-,10+,13+/m1/s1/f/h19-20H 15976A15AB3E7555