InChI=1S/C42H32O9/c43-26-6-2-22(3-7-26)40-38(24-13-28(45)17-29(46)14-24)33(34-19-32(49)20-36(50)41(34)40)11-21-1-10-37-35(12-21)39(25-15-30(47)18-31(48)16-25)42(51-37)23-4-8-27(44)9-5-23/h1-20,38-40,42-50H/b33-11-/t38-,39-,40+,42+/m0/s1