Using COC(=O)c1ccc(C=O)cc1, COP(=O)(OC)C(Br)C(=O)OCc1ccccc1 to produce COC(=O)c1ccc(C=C(Br)C(=O)OCc2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.