InChI=1S/C22H30O8/c1-12(23)28-20(4)16(25)14-15-18(2,17(26)27-14)7-5-8-19(15,3)22(20)11-10-21(30-22)9-6-13(24)29-21/h13-15,24H,5-11H2,1-4H3