InChI=1S/C15H28N2O5/c1-9(2)5-6-16-14(21)11(7-10(3)4)17-15(22)12(18)8-13(19)20/h9-12,18H,5-8H2,1-4H3,(H,16,21)(H,17,22)(H,19,20)/t11-,12-/m0/s1