InChI=1/C13H8N4O6S2/c18-12(10-5-6-15-23-10)16-13-14-7-11(24-13)25(21,22)9-3-1-8(2-4-9)17(19)20/h1-7H,(H,14,16,18)/f/h16H 7A7DB216C3225D2B