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