Using CCN(Cc1ccc(Cl)c(C=O)c1)C(=O)OC(C)(C)C, NC1CC1 to produce CCN(Cc1ccc(Cl)c(CNC2CC2)c1)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.