InChI=1S/C20H24O9S/c1-11-14(10-21)20(13-4-6-15(22)17(8-13)26-2)28-19(11)12-5-7-16(18(9-12)27-3)29-30(23,24)25/h4-9,11,14,19-22H,10H2,1-3H3,(H,23,24,25)