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