Using CC(C)(C)OC(=O)N1CC2CNCC2C1, O=C(O)c1ccc(Cl)c(Cl)c1 to produce CC(C)(C)OC(=O)N1CC2CN(C(=O)c3ccc(Cl)c(Cl)c3)CC2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.