InChI=1S/C40H34O16/c1-38-15-23(21-8-7-20(14-27(21)54-38)52-37-33(48)31(46)32(47)34(53-37)36(50)51)39-30(35(38)49)29-26(45)10-16(2-3-17-4-5-18(41)12-24(17)43)11-28(29)55-40(39,56-39)22-9-6-19(42)13-25(22)44/h2-14,23,30-34,37,41-48H,15H2,1H3,(H,50,51)/b3-2+