InChI=1S/C26H26O17/c27-9-2-1-7(3-10(9)28)21-22(42-25-19(35)15(31)12(30)6-39-25)16(32)14-11(29)4-8(5-13(14)41-21)40-26-20(36)17(33)18(34)23(43-26)24(37)38/h1-5,12,15,17-20,23,25-31,33-36H,6H2,(H,37,38)