Using Br[Mg]c1ccccc1, CON(C)C(=O)[C@@H]1CC(=O)N([C@H](C)c2ccccc2)C1 to produce C[C@H](c1ccccc1)N1C[C@H](C(=O)c2ccccc2)CC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.