InChI=1S/C36H34O19/c37-13-24-27(43)32(54-25(42)8-2-14-1-7-18(38)19(39)9-14)31(47)36(53-24)51-17-10-20(40)26-21(41)12-22(52-23(26)11-17)15-3-5-16(6-4-15)50-35-30(46)28(44)29(45)33(55-35)34(48)49/h1-12,24,27-33,35-40,43-47H,13H2,(H,48,49)/b8-2+