InChI=1S/C15H20N2O5/c1-8(2)15(7-18,14(21)22)17-12(16)11-6-9(3)4-5-10(11)13(19)20/h4-6,8,18H,7H2,1-3H3,(H2,16,17)(H,19,20)(H,21,22)