Using CCOC(=O)c1[nH]c2cc(Cl)cc(Cl)c2c1C=CC(=O)Nc1ccccc1 to produce O=C(/C=C/c1c(C(=O)O)[nH]c2cc(Cl)cc(Cl)c12)Nc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.