Using O=S(=O)(O)O, Cc1ccc(Cl)cc1-c1[nH]c(-c2ccncn2)cc1C#N to produce Cc1ccc(Cl)cc1-c1[nH]c(-c2ccncn2)cc1C(N)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.