InChI=1S/C27H20O21S/c28-4-1-3-6(14(31)13(4)30)9-10(25(38)39)7(16(33)19(36)22(9)47-26(3)40)8-11-12(17(34)18(35)15(8)32)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)