Using O=C(Cl)CCl, O=C(C1CNC1)N1CCCN(C2CCC2)CC1 to produce O=C(CCl)N1CC(C(=O)N2CCCN(C3CCC3)CC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.