InChI=1S/C20H20O14S/c21-8-2-1-7(3-9(8)22)12-4-10(23)15-13(32-12)5-11(24)19(17(15)26)33-20-18(27)16(25)14(6-31-20)34-35(28,29)30/h1-3,5,12,14,16,18,20-22,24-27H,4,6H2,(H,28,29,30)