Using BrCCCc1ccccc1, CCOC(=O)c1cc2c(N3CCNCC3)cccc2s1 to produce CCOC(=O)c1cc2c(N3CCN(CCCc4ccccc4)CC3)cccc2s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.