InChI=1S/C29H26O12/c1-38-24-13-18(4-8-20(24)31)15-26(29(37)39-2)40-23-9-5-16(11-22(23)33)6-10-27(34)41-25(28(35)36)14-17-3-7-19(30)21(32)12-17/h3-13,15,25,30-33H,14H2,1-2H3,(H,35,36)/b10-6+,26-15-