Using CCC(C)(C)c1ccc(O)c(Cl)c1, CCCCCCC(Br)C(=O)OCC to produce CCCCCCC(Oc1ccc(C(C)(C)CC)cc1Cl)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.