Using O=[N+]([O-])c1oc2ccc(CBr)cc2c1-c1ccccc1, CS to produce CSCc1ccc2oc([N+](=O)[O-])c(-c3ccccc3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.