Using CCCN(CCC)C1Cc2cc3c(cc2C1)C(=O)NC3=O, CCBr to produce CCCN(CCC)C1Cc2cc3c(cc2C1)C(=O)N(CC)C3=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.