Using Br[Mg]c1ccc(OCc2ccccc2)cc1, CON(C)C(=O)c1ncc(F)cc1F to produce O=C(c1ccc(OCc2ccccc2)cc1)c1ncc(F)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.