InChI=1S/C18H24N2O7/c1-18(2,6-5-10-8-9-4-3-7-19-15(9)20-10)27-17-13(23)11(21)12(22)14(26-17)16(24)25/h3-4,7-8,11-14,17,21-23H,5-6H2,1-2H3,(H,19,20)(H,24,25)