Using COC(=O)c1ccc2[nH]cc(C=O)c2c1, BrCCCCc1ccccc1 to produce COC(=O)c1ccc2c(c1)c(C=O)cn2CCCCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.