Using O=C([O-])[O-], C=CCOc1ccc(O)cc1N1C(=O)c2ccccc2C1=O to produce C=CCOc1ccc(OC)cc1N1C(=O)c2ccccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.