InChI=1S/C20H20O13S/c21-10-3-1-2-9(6-10)4-5-11(22)15-12(23)7-13(24)18(17(15)27)32-20-19(33-34(28,29)30)16(26)14(25)8-31-20/h1-7,14,16,19-21,23-27H,8H2,(H,28,29,30)