InChI=1S/C15H21N5O8S/c1-8(4-21)2-3-16-13-10-14(18-6-17-13)20(7-19-10)15-12(28-29(24,25)26)11(23)9(5-22)27-15/h2,6-7,9,11-12,15,21-23H,3-5H2,1H3,(H,16,17,18)(H,24,25,26)/b8-2+