Using BrCCc1ccccc1, COC(=O)c1ccc(O)cc1NC(=O)c1ccccc1 to produce COC(=O)c1ccc(OCCc2ccccc2)cc1NC(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.