InChI=1S/C21H20O13S/c22-9-3-1-8(2-4-9)12-5-10(23)15-13(33-12)6-11(24)16(18(15)26)21-20(28)19(27)17(25)14(34-21)7-32-35(29,30)31/h1-6,14,17,19-22,24-28H,7H2,(H,29,30,31)