InChI=1/C11H9N3O5S/c1-5-7(19-20(2,16)17)4-3-6-9(15)8-11(13-14-12-8)18-10(5)6/h3-4H,1-2H3,(H,12,13,14)/f/h12H 89CA2E8CFC57F37D