InChI=1S/C20H22O8S/c1-11(2)3-5-14-17(22)8-7-15-19(14)27-10-16(20(15)28-29(24,25)26)13-6-4-12(21)9-18(13)23/h3-4,6-9,16,20-23H,5,10H2,1-2H3,(H,24,25,26)