Using CCCCCCCCCCCCBr, COC(=O)c1cc(Cl)c(O)c(Cl)c1 to produce CCCCCCCCCCCCOc1c(Cl)cc(C(=O)OC)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.