Using CC1=C(C(=O)[O-])C(C)C(C(=O)OCC(C#N)C#N)=C(C)N1 to produce CC1=C(C(=O)O)C(C)C(C(=O)O)=C(C)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.