InChI=1S/C21H34O8/c1-19(2,27)12-8-7-11-6-5-9-21(4,20(11,3)10-12)29-18-15(24)13(22)14(23)16(28-18)17(25)26/h6,12-16,18,22-24,27H,5,7-10H2,1-4H3,(H,25,26)