InChI=1S/C25H26O7/c1-24(2,30)9-7-16-21(29)20-18(28)12-19-15(8-10-25(3,4)32-19)23(20)31-22(16)14-6-5-13(26)11-17(14)27/h5-6,8,10-12,26-28,30H,7,9H2,1-4H3