Using CC(C)(C)OC(=O)CON, O=C(O)C(=O)c1ccc(O)c(Cl)c1 to produce CC(C)(C)OC(=O)CON=C(C(=O)O)c1ccc(O)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.