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