InChI=1S/C25H28O7/c1-24(2)7-4-8-25(3,31)21(24)10-14-16(27)11-20-22(23(14)30)18(29)12-19(32-20)13-5-6-15(26)17(28)9-13/h5-6,9,11-12,21,26-28,30-31H,4,7-8,10H2,1-3H3