Using C[Mg+], CON(C)C(=O)[C@@H](NC(=O)OC(C)(C)C)c1ccccc1 to produce CC(=O)[C@@H](NC(=O)OC(C)(C)C)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.