InChI=1S/C18H30N2O7/c1-11(21)7-5-3-2-4-6-8-12-9-10-20(19-12)17-15(24)13(22)14(23)16(27-17)18(25)26/h9-11,13-17,21-24H,2-8H2,1H3,(H,25,26)