InChI=1S/C27H22O20/c28-9-1-7(4-11(15(9)31)45-26(43)8-5-10(29)16(32)18(34)14(8)30)25(42)44-12-2-6(23(38)39)3-13(17(12)33)46-27-21(37)19(35)20(36)22(47-27)24(40)41/h1-5,19-22,27-37H,(H,38,39)(H,40,41)