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