Using O=N[O-], COC(=O)c1ccc(N)c(CS(=O)(=O)c2cccc3ccccc23)c1 to produce COC(=O)c1ccc2[nH]nc(S(=O)(=O)c3cccc4ccccc34)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.