InChI=1S/C20H24O8S/c1-10-5-12-7-17(26-3)15(21)9-14(12)19(11(10)2)13-6-16(22)20(18(8-13)27-4)28-29(23,24)25/h6-11,19,21-22H,5H2,1-4H3,(H,23,24,25)