InChI=1S/C33H26O23/c34-3-7(36)16(38)18(40)8-2-4-10(31(50)52-8)11(19(41)21(43)15(4)37)12-14-13-9-5(1-6(35)17(39)25(9)53-32(14)51)30(49)54-26(13)27(20(12)42)55-33-24(46)22(44)23(45)28(56-33)29(47)48/h1-2,7,16,18,22-24,28,33-46H,3H2,(H,47,48)