Using Cc1ccccc1C1=CCN(C(=O)C2(c3ccc(Cl)cc3)CC2)C1 to produce Cc1ccccc1C1CCN(C(=O)C2(c3ccc(Cl)cc3)CC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.