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