InChI=1S/C18H30N2O7/c21-11-7-5-3-1-2-4-6-8-12-9-10-20(19-12)17-15(24)13(22)14(23)16(27-17)18(25)26/h9-10,13-17,21-24H,1-8,11H2,(H,25,26)