InChI=1/C20H22N2O5/c1-11-16(19(24)27-4)17(12-6-5-7-13(8-12)22(25)26)18-14(21-11)9-20(2,3)10-15(18)23/h5-8,17,21H,9-10H2,1-4H3/t17-/m1/s1 5B92FC0DA462E64B