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