Using COC(=O)c1ccc(O)cc1, CCc1sc(Br)cc1C(O)C1CCCCC1 to produce CCc1sc(Br)cc1C(Oc1ccc(C(=O)OC)cc1)C1CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.