Using O=C(Nc1ccc(Cl)cc1)c1cc(Cl)ccc1NC(=O)c1sc(CBr)cc1Cl, O=C([O-])[O-] to produce O=C(Nc1ccc(Cl)cc1)c1cc(Cl)ccc1NC(=O)c1sc(CO)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.