Using CCCCCN1C(=O)C(CCC(=O)OC)(NC(=O)c2ccc(Cl)c(Cl)c2)c2ccccc21 to produce CCCCCN1C(=O)C(CCC(=O)O)(NC(=O)c2ccc(Cl)c(Cl)c2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.