InChI=1S/C34H42O17/c1-28-10-17-30(3)34-22(28)23(40)33(51-34,46-11-14(28)25(43)47-17)13-9-16(36)32(49-26-20(39)18(37)19(38)21(48-26)24(41)42)7-4-5-15(35)29(32,2)12(13)6-8-31(34,45)27(44)50-30/h12-14,16-22,26,36-39,45H,4-11H2,1-3H3,(H,41,42)