Using BrCc1ccccc1, O=C(O)CCCc1c[nH]c2ccc(Cl)cc12 to produce O=C(CCCc1c[nH]c2ccc(Cl)cc12)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.