Using COC(=O)c1cc(Cl)ccc1NC(=O)c1cccc(-c2cncc3ccccc23)c1 to produce O=C(Nc1ccc(Cl)cc1C(=O)[O-])c1cccc(-c2cncc3ccccc23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.