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