InChI=1S/C21H32O8/c1-9-5-8-21(27)16(19(21,2)3)11-10(9)6-7-20(11,4)29-18-14(24)12(22)13(23)15(28-18)17(25)26/h11-16,18,22-24,27H,5-8H2,1-4H3,(H,25,26)