InChI=1S/C27H22O19/c28-10-1-8(2-11(29)16(10)31)25(41)43-13-6-9(3-12(30)17(13)32)26(42)44-14-4-7(23(37)38)5-15(18(14)33)45-27-21(36)19(34)20(35)22(46-27)24(39)40/h1-6,19-22,27-36H,(H,37,38)(H,39,40)