InChI=1S/C18H22N2O5/c1-7(2)14(21)10-5-8-12(19-10)16(23)9-6-11(17(24)18(3,4)25)20-13(9)15(8)22/h5-7,14,17,19-21,24-25H,1-4H3/t14-,17+/m1/s1