Using COc1ncc(COc2ccc(C#N)cc2Cl)cc1Cl, O=C([O-])[O-] to produce COc1ncc(COc2ccc(C(N)=O)cc2Cl)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.