Using c1cc(N2CCNCC2)ccn1, COC(=O)COc1ccc2nccc(Br)c2c1 to produce COC(=O)COc1ccc2nccc(N3CCN(c4ccncc4)CC3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.