Using CCOC(=O)c1cc(C)c(C=C2C(=O)Nc3ccc(Cl)cc32)[nH]1 to produce Cc1cc(C(=O)O)[nH]c1C=C1C(=O)Nc2ccc(Cl)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.