InChI=1S/C36H40O20/c37-12-19-23(42)25(44)28(47)33(55-19)36(53)31(49)21(17(11-20(40)41)14-4-6-15(38)7-5-14)24(43)22(32(36)50)18(39)10-3-13-1-8-16(9-2-13)54-35-29(48)26(45)27(46)30(56-35)34(51)52/h1-10,17,19,22-30,33,35,37-38,42-49,53H,11-12H2,(H,40,41)(H,51,52)/b10-3+