InChI=1S/C26H26O18/c27-6-1-5-8(2-7(6)28)41-9-3-10(43-26-22(38)19(35)21(37)24(44-26)25(39)40)14(17(33)13(9)15(5)31)23-20(36)18(34)16(32)11(42-23)4-12(29)30/h1-3,11,16,18-24,26-28,32-38H,4H2,(H,29,30)(H,39,40)