InChI=1S/C20H24O8S/c1-11-16-9-14(19(26-4)12(2)28-29(22,23)24)10-17(21)20(16)27-18(11)13-6-5-7-15(8-13)25-3/h5-12,18-19,21H,1-4H3,(H,22,23,24)