Using CC1CCNCC1NC(=O)OC(C)(C)C, O=C(O)CNc1cc(Cl)cc(Cl)c1 to produce CC1CCN(C(=O)CNc2cc(Cl)cc(Cl)c2)CC1NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.