InChI=1S/C23H26O8/c1-24-16-5-12(6-17(25-2)22(16)27-4)20-14-9-29-21(15(14)10-28-20)13-7-18(26-3)23-19(8-13)30-11-31-23/h5-8,14-15,20-21H,9-11H2,1-4H3