Using COC(=O)c1ccc(Br)s1, COc1ccc(Br)cc1C(C)(C)C to produce COC(=O)c1ccc(-c2ccc(OC)c(C(C)(C)C)c2)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.