InChI=1S/C11H20N2O5/c1-3-6(2)9(11(17)18)13-10(16)7(12)4-5-8(14)15/h6-7,9H,3-5,12H2,1-2H3,(H,13,16)(H,14,15)(H,17,18)/t6-,7-,9-/m0/s1