Using O=C(CBr)c1ccccc1[N+](=O)[O-], O=C([O-])/C=C/c1ccc(Cl)cc1NS(=O)(=O)c1ccccc1 to produce O=C(O)Cc1c(C(=O)c2ccccc2[N+](=O)[O-])[nH]c2cc(Cl)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.