InChI=1S/C17H26O9/c1-3-4-7-10(8-5-6-9-11(18)24-2)25-17-14(21)12(19)13(20)15(26-17)16(22)23/h5-6,8-10,12-15,17,19-21H,3-4,7H2,1-2H3,(H,22,23)/b8-5-,9-6+