InChI=1/C21H25BrN2O3/c1-16-2-4-17(5-3-16)20(24-10-12-26-13-11-24)14-23-21(25)15-27-19-8-6-18(22)7-9-19/h2-9,20H,10-15H2,1H3,(H,23,25)/t20-/m0/s1/f/h23H 7DAA86C1923D72D1