Using CC(C)(C)S(=O)N=CC1(c2ncc(C(F)(F)F)cc2Cl)CC1, C[Mg]Br to produce CC(N)C1(c2ncc(C(F)(F)F)cc2Cl)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.