InChI=1S/C17H10F4N2O4S/c18-7-1-2-8(11(3-7)27-6-13(24)25)17(26)22-5-12-23-15-14(21)9(19)4-10(20)16(15)28-12/h1-4H,5-6H2,(H,22,26)(H,24,25)