InChI=1S/C21H22BrNO2/c1-23(19-10-11-19)14-2-3-15-25-20-12-6-17(7-13-20)21(24)16-4-8-18(22)9-5-16/h2-9,12-13,19H,10-11,14-15H2,1H3/b3-2+