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