Using O=S(=O)([O-])O[O-], Cc1csc2c(SC[N+](=O)[O-])cccc12 to produce Cc1csc2c(S(=O)C[N+](=O)[O-])cccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.