InChI=1S/C32H22O20/c33-3-8-18(38)27-26-14-5-2-7(35)17(37)24(44)25(5)52-32(14)15(31(48)50-26)13(22(42)28(32)45)11-12(30(47)51-27)10(20(40)23(43)21(11)41)9-4(29(46)49-8)1-6(34)16(36)19(9)39/h1-2,8,13-15,18,26-27,33-41,43-44H,3H2