Using CS(=O)(=O)c1ccc(/C(COC(=O)OCC(CO[N+](=O)[O-])O[N+](=O)[O-])=C(/C(=O)O)c2ccccc2)cc1, BrCc1ccccc1 to produce CS(=O)(=O)c1ccc(/C(COC(=O)OCC(CO[N+](=O)[O-])O[N+](=O)[O-])=C(/C(=O)OCc2ccccc2)c2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.