InChI=1S/C19H26O8S2/c1-11-5-6-13(26-14(20)7-8-28-4)15-16(27-29(22,23)24)19(10-18(11,15)3)12(2)9-25-17(19)21/h7-8,11,13,15-16H,2,5-6,9-10H2,1,3-4H3,(H,22,23,24)/b8-7+