InChI=1S/C12H20O5/c1-2-5-10-11(15)8(13)6-3-4-7-9(14)12(16)17-10/h3,6,8-11,13-15H,2,4-5,7H2,1H3/b6-3-/t8-,9+,10-,11+/m1/s1