InChI=1S/C28H30O9/c1-13-19(30)35-18-12-23(13,2)20-27(34)16-9-8-14-6-5-7-17(29)24(14,3)15(16)10-11-26(33)21(31)36-25(18,4)28(20,26)37-22(27)32/h5-9,13,15-16,18,20,33-34H,10-12H2,1-4H3