Using O=C(Cl)OCC(Cl)(Cl)Cl, CCn1nc(C(C)(C)C)cc1N to produce CCn1nc(C(C)(C)C)cc1NC(=O)OCC(Cl)(Cl)Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.