InChI=1S/C21H32O8/c1-9-4-7-12(13-10(2)5-6-11(9)13)18-21(3,29-18)8-27-20-16(24)14(22)15(23)17(28-20)19(25)26/h9,11-12,14-18,20,22-24H,4-8H2,1-3H3,(H,25,26)