Using CCCCC1(C(=O)c2ccc(Cl)c(Cl)c2)CCCN1C(=O)OC(C)(C)C to produce CCCCC1(C(=O)c2ccc(Cl)c(Cl)c2)CCCN1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.