InChI=1S/C17H30O8/c1-2-3-4-5-6-8-11(18)9-7-10-24-17-14(21)12(19)13(20)15(25-17)16(22)23/h7,9,11-15,17-21H,2-6,8,10H2,1H3,(H,22,23)/b9-7+