InChI=1/C20H23N3O4/c1-23-16(9-13-10-17(24)19(27-3)18(25)11-13)15(22-20(23)21)8-12-4-6-14(26-2)7-5-12/h4-7,10-11H,8-9H2,1-3H3,(H4,21,22,24,25)/p+1/fC20H24N3O4/h22,24-25H,21H2/q+1 73DD363ABDEA9B16