Using CN1CCNCC1, O=C(O)Cc1c(-c2ccc(Cl)cc2)nc2ccccn12 to produce CN1CCN(C(=O)Cc2c(-c3ccc(Cl)cc3)nc3ccccn23)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.