InChI=1S/C19H19N3O2/c1-10-4-5-13-12(8-10)16-14(22(13)7-3-6-20)9-11(2)15-17(16)19(24)21-18(15)23/h4-5,8-9H,3,6-7,20H2,1-2H3,(H,21,23,24)