InChI=1S/C11H17NO12S2/c1-2-4(13)3-5(12-24-26(19,20)21)25-23-11-8(16)6(14)7(15)9(22-11)10(17)18/h2,4,6-9,11,13-16H,1,3H2,(H,17,18)(H,19,20,21)/b12-5+