InChI=1S/C21H34O8/c1-10-6-5-8-21(4)9-7-11(20(2,3)27)16(12(10)21)28-19-15(24)13(22)14(23)17(29-19)18(25)26/h11-17,19,22-24,27H,1,5-9H2,2-4H3,(H,25,26)