InChI=1S/C23H26O8/c1-25-17-7-13(8-18(26-2)21(17)28-4)5-15-11-29-23(24)16(15)6-14-9-19(27-3)22-20(10-14)30-12-31-22/h7-10,15-16H,5-6,11-12H2,1-4H3