Using COc1ccc(C=O)cc1, O=C(O)CC(=O)Nc1ccccc1C(=O)O to produce COc1ccc(/C=C/C(=O)Nc2ccccc2C(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.