Using CC(C)(C)OC(=O)CON, CCOC(=O)C(=O)c1nc(NC=O)sc1Cl to produce CC(C)(C)OC(=O)CON=C(C(=O)O)c1nc(NC=O)sc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.