Using CN, CCOC(=O)c1cnn(-c2cc(C(=O)O)ccc2Cl)c1C1CC1 to produce CCOC(=O)c1cnn(-c2cc(C(=O)NC)ccc2Cl)c1C1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.