InChI=1/C14H7F6NO2/c15-7-5-8(16)11-9(10(7)17)13(14(18,19)20,23-12(22)21-11)4-3-6-1-2-6/h5-6H,1-2H2,(H,21,22)/t13-/m0/s1/f/h21H 92DCDBEA0B1BA8EB