Using Clc1ccc(Br)cc1Cc1ccc2c(c1)NCCO2, BrCc1ccccc1 to produce Clc1ccc(Br)cc1Cc1ccc2c(c1)N(Cc1ccccc1)CCO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.