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