InChI=1S/C21H23N3O2/c1-14-8-5-6-13-24(14)21-15-9-3-4-11-17(15)22-20(23-21)16-10-7-12-18(26-2)19(16)25/h3-4,7,9-12,14,22H,5-6,8,13H2,1-2H3/b20-16+