Using C[O-], COC(=O)C(C(=O)OC)c1[nH]c2cccc(Cl)c2c1CCN=[N+]=[N-] to produce COC(=O)C(C)(C(=O)OC)c1[nH]c2cccc(Cl)c2c1CCN=[N+]=[N-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.