Using COc1ncc(CS(=O)(=O)CC(=O)[O-])cc1[N+](=O)[O-] to produce COc1ncc(CS(=O)(=O)CC(=O)O)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.