Using O=N[O-], Cc1ccc(S(=O)(=O)OCCOc2ccc(N)c(CS(=O)(=O)c3ccccc3)c2)cc1 to produce Cc1ccc(S(=O)(=O)OCCOc2ccc3[nH]nc(S(=O)(=O)c4ccccc4)c3c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.