InChI=1S/C20H24O8S/c1-10-7-13-9-16(27-4)19(21)20(22)18(13)17(11(10)2)12-5-6-14(15(8-12)26-3)28-29(23,24)25/h5-6,8-11,17,21-22H,7H2,1-4H3,(H,23,24,25)