InChI=1S/C21H20O14S/c1-31-13-5-9(22)6-14-15(13)17(26)20(34-21-18(27)16(25)11(24)7-32-21)19(33-14)8-2-3-10(23)12(4-8)35-36(28,29)30/h2-6,11,16,18,21-25,27H,7H2,1H3,(H,28,29,30)