InChI=1S/C20H22N3O6/c1-11-16(19(24)28-3)18(13-5-4-6-14(9-13)23(26)27)17(12(2)22-11)20(25)29-15-7-8-21-10-15/h4-6,9,15,18,22H,7-8,10H2,1-3H3/q-1/t15-,18-/m0/s1