InChI=1S/C17H26O9/c1-10(8-6-4-3-5-7-9-11(18)24-2)25-17-14(21)12(19)13(20)15(26-17)16(22)23/h3,5,7,9-10,12-15,17,19-21H,4,6,8H2,1-2H3,(H,22,23)/b5-3-,9-7+