InChI=1S/C23H24O9/c1-29-20-11-15(3-7-18(20)25)5-9-22(27)31-13-17(24)14-32-23(28)10-6-16-4-8-19(26)21(12-16)30-2/h3-12,17,24-26H,13-14H2,1-2H3