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