InChI=1/C13H9N4O5S/c18-13-5-4-8(6-12(13)17(19)20)23(21,22)16-11-3-1-2-10-9(11)7-14-15-10/h1-7H,(H2-,14,15,16,18)/q-1/f/h15,18H A2392490AEE7A2F9