Using Br[Mg]c1ccccc1, CCCn1nc(-c2ccc(OC)c(F)c2)c2cccc(Cl)c21 to produce CCCn1nc(-c2ccc(OC)c(F)c2)c2cccc(-c3ccccc3)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.