Using O=C([O-])[O-], COc1ccc(/C=C/C(=O)n2c(=O)[nH]c3ccccc32)cc1OC to produce COc1ccc(/C=C/C(=O)n2c(=O)n(C)c3ccccc32)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.