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