InChI=1S/C34H42O19/c1-45-17-9-15(10-18(46-2)25(17)38)5-7-23(36)52-32-30(43)28(41)22(14-49-33-31(44)29(42)27(40)21(13-35)50-33)51-34(32)53-24(37)8-6-16-11-19(47-3)26(39)20(12-16)48-4/h5-12,21-22,27-35,38-44H,13-14H2,1-4H3/b7-5+,8-6+