InChI=1S/C12H19NO6/c1-13(2,3)8-9(7-11(16)17)19-12(18)6-4-5-10(14)15/h4,6,9H,5,7-8H2,1-3H3,(H-,14,15,16,17)/b6-4+/t9-/m0/s1