Using CCC(=O)N1CCC(NC(=O)Nc2ccc(C(=O)OC)cc2)CC1 to produce CCC(=O)N1CCC(NC(=O)Nc2ccc(C(=O)O)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.