Using CC(=O)c1c[nH]c2ccc(Cl)cc12, CCOC(=O)C(=O)OCC to produce CCOC(=O)C(O)=CC(=O)c1c[nH]c2ccc(Cl)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.