InChI=1S/C33H40O22/c34-7-13-17(38)20(41)24(45)30(54-13)33(51)28(47)14(18(39)15(29(33)48)19(40)26-22(43)16(37)12(36)8-52-26)11(35)6-3-9-1-4-10(5-2-9)53-32-25(46)21(42)23(44)27(55-32)31(49)50/h1-6,12-14,16-17,19-27,30,32,34,36-38,40-46,48,51H,7-8H2,(H,49,50)/b6-3+