InChI=1/C42H32O9/c43-23-7-1-19(2-8-23)33-35(22-13-26(46)15-27(47)14-22)38-31(50)18-32-39-37(42(51-32)21-5-11-25(45)12-6-21)29-16-28(48)17-30(49)36(29)34(40(33)41(38)39)20-3-9-24(44)10-4-20/h1-18,33-35,37,40,42-50H/t33-,34-,35-,37-,40-,42+/s2