Using CC(C)(C)S(=O)N=C(c1cccc(Br)c1)c1cccc(F)c1C#N, COc1ccc([Mg]Br)cc1 to produce COc1ccc(C2(c3cccc(Br)c3)N=C(N)c3c(F)cccc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.