Using CCN(CC)c1nc2ccc(Cl)cc2c(-c2cccc(Cl)c2)c1C(=O)OC(C)(C)C to produce CCN(CC)c1nc2ccc(Cl)cc2c(-c2cccc(Cl)c2)c1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.