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