InChI=1S/C22H20O10S/c1-11(10-30-33(25,26)27)4-6-14-15(28-2)9-17-19(20(14)29-3)21-18(22(24)32-17)13-7-5-12(23)8-16(13)31-21/h4-5,7-9,23H,6,10H2,1-3H3,(H,25,26,27)