Using CC(C)(C)OC(=O)[C@@H]1CCCC[C@@H]1C#N, Fc1ccc([Mg]Br)cc1 to produce Fc1ccc(-c2[nH]c(-c3ccc(F)cc3)c3c2CCCC3)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.