InChI=1S/C20H34O8/c1-6-7-8-14(21)9-10-15(22)28-16-11(2)17(23)20(5,26)18(24)12(3)19(25)27-13(16)4/h9-14,16-18,21,23-24,26H,6-8H2,1-5H3/b10-9+/t11-,12-,13+,14?,16-,17+,18+,20-/m1/s1