InChI=1S/C27H20O21S/c28-4-1-3(25(38)39)6-7-10(26(40)47-22(6)13(4)30)8(15(32)18(35)14(7)31)9-11-12(17(34)19(36)16(9)33)23-24(48-27(11)41)20(37)21(46-23)5(29)2-45-49(42,43)44/h1,5,20-21,23-24,28-37H,2H2,(H,38,39)(H,42,43,44)