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