InChI=1S/C20H22O10S/c1-11(10-30-31(27,28)29)2-6-14-17(24)9-18(25)19(20(14)26)15(22)7-4-12-3-5-13(21)8-16(12)23/h2-3,5,8-9,21,23-26H,4,6-7,10H2,1H3,(H,27,28,29)