Using CCOC(=O)Cn1c2c(c3ccccc31)CNCC2, BrCCc1ccccc1 to produce CCOC(=O)Cn1c2c(c3ccccc31)CN(CCc1ccccc1)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.