InChI=1S/C41H44O21/c42-16-27-29(47)31(49)35(62-40-36(52)41(55,18-57-40)17-56-28(46)14-6-19-1-7-21(43)8-2-19)39(60-27)58-22-9-3-20(4-10-22)5-13-25(44)24-12-11-23(15-26(24)45)59-38-33(51)30(48)32(50)34(61-38)37(53)54/h1-15,27,29-36,38-40,42-43,45,47-52,55H,16-18H2,(H,53,54)/b13-5?,14-6+