Using O=C([O-])[O-], COC(=O)c1ccc(-n2ccc(O)cc2=O)cc1 to produce COC(=O)c1ccc(-n2ccc(OC)cc2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.