InChI=1S/C18H21N3O3/c1-13-6-7-14(16(11-13)24-2)12-21-18(23)17(22)20-10-8-15-5-3-4-9-19-15/h3-7,9,11H,8,10,12H2,1-2H3,(H,20,22)(H,21,23)