InChI=1S/C40H34O17/c1-38-14-21(19-12-27(24(45)13-26(19)55-38)53-37-33(49)31(47)32(48)34(54-37)36(51)52)39-30(35(38)50)29-25(46)8-15(2-3-16-4-5-17(41)10-22(16)43)9-28(29)56-40(39,57-39)20-7-6-18(42)11-23(20)44/h2-13,21,30-34,37,41-49H,14H2,1H3,(H,51,52)/b3-2+