InChI=1S/C11H17NO13S2/c13-3(4-2-22-4)1-5(12-25-27(19,20)21)26-24-11-8(16)6(14)7(15)9(23-11)10(17)18/h3-4,6-9,11,13-16H,1-2H2,(H,17,18)(H,19,20,21)/b12-5+