Using COc1cccc(NS(=O)(=O)c2ccc(Br)cc2)c1, O=C([O-])[O-] to produce COc1cccc(N(C)S(=O)(=O)c2ccc(Br)cc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.