InChI=1S/C20H26O9S/c1-6-10(2)19(22)27-17-8-12(4)15(29-30(24,25)26)9-14(21)11(3)7-16-18(17)13(5)20(23)28-16/h6-7,14-18,21H,4-5,8-9H2,1-3H3,(H,24,25,26)/b10-6-,11-7+