Using O=C(Cl)c1ccccc1, COC(=O)CCNC(C)(C)C(=O)OC to produce COC(=O)CCN(C(=O)c1ccccc1)C(C)(C)C(=O)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.