InChI=1/C13H11N3O4S/c17-7-1-2-9-3-4-10(21-9)8-14-13(18)11-5-6-12(15-11)16(19)20/h3-6,15,17H,7-8H2,(H,14,18)/f/h14H 9A0C7A5E35BC58C4