Using On1nnc2ccccc21, O=C(O)c1cc(Br)cc2c(C3CCS(=O)(=O)C(c4ccccc4)C3)c[nH]c12 to produce NC(=O)c1cc(Br)cc2c(C3CCS(=O)(=O)C(c4ccccc4)C3)c[nH]c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.