Using CC(=O)OCCc1cc(S(N)(=O)=O)c2c([N+](=O)[O-])cccc2c1Br to produce NS(=O)(=O)c1cc(CCO)c(Br)c2cccc([N+](=O)[O-])c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.