InChI=1S/C13H22O7S2/c1-3-5-21-22-7(4-2)6-19-13-10(16)8(14)9(15)11(20-13)12(17)18/h3,5,7-11,13-16H,4,6H2,1-2H3,(H,17,18)/b5-3+