InChI=1/C19H21BrN2O3/c1-13(22(2)11-15-5-3-4-6-16(15)20)19(23)21-10-14-7-8-17-18(9-14)25-12-24-17/h3-9,13H,10-12H2,1-2H3,(H,21,23)/t13-/m1/s1/f/h21H 0892FB90D40A343B