InChI=1S/C12H11N7O4S/c13-9-7(5-1-3-6(4-2-5)23-24(20,21)22)16-8-10(14)18-12(15)19-11(8)17-9/h1-4H,(H,20,21,22)(H6,13,14,15,17,18,19)