Using FC(F)(F)CS, O=Cc1ccc(-c2nc([N+](=O)[O-])n[nH]2)cc1F to produce O=Cc1ccc(-c2nc([N+](=O)[O-])n[nH]2)cc1SCC(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.