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/h3-4,15H,1-2H3/p-1/fC11H8N3O5S/h15h/q-1 3CA6A033DE06F04C