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