InChI=1S/C9H11N5O7S/c1-3(21-22(18,19)20)6(15)4-2-10-7-5(11-4)8(16)13-9(12-7)14-17/h3,17H,2H2,1H3,(H,18,19,20)(H3,10,12,13,14,16)