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