InChI=1S/C21H22O8S/c1-21(2)11-10-16-19(28-21)12-18(23)15(20(16)27-3)8-9-17(22)13-4-6-14(7-5-13)29-30(24,25)26/h4-7,10-12,23H,8-9H2,1-3H3,(H,24,25,26)