Using COC(=O)c1ncc(C=O)c(C)c1OCc1ccccc1, Fc1ccc([Mg]Br)cc1 to produce COC(=O)c1ncc(C(O)c2ccc(F)cc2)c(C)c1OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.