InChI=1/C21H22N2O/c1-2-6-18(7-3-1)16-23-14-12-17(13-15-23)10-11-20-19-8-4-5-9-21(19)24-22-20/h1-11,17H,12-16H2/p+1/b11-10-/fC21H23N2O/h23H/q+1 AA126D2E95A5A2BC