InChI=1S/C22H21N3O3/c26-21-7-6-19-13-18(21)15-28-11-2-1-10-27-14-16-4-3-5-17(12-16)20-8-9-23-22(24-19)25-20/h1-9,12-13,26H,10-11,14-15H2,(H,23,24,25)/b2-1+