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