Using O=S([O-])S(=O)(=O)[O-], COc1ccc(CNC(c2ccccc2)c2cc(Br)ccc2O)cc1 to produce O=C1NC(c2ccccc2)c2cc(Br)ccc2O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.