Using CC(C)(C)OC(=O)N1CC(C(=O)c2cc(F)cc(F)c2)C1, CC(C)(C)[Mg]Cl to produce CC(C)(C)OC(=O)N1CC(C(O)(c2cc(F)cc(F)c2)C(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.