Using CCOC(=O)CCc1ncc(Cl)cc1NC1CCN(C(=O)OC(C)(C)C)CC1 to produce CC(C)(C)OC(=O)N1CCC(N2C(=O)CCc3ncc(Cl)cc32)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.