Using CN1c2ccc(Br)nc2C(=O)C(C)(C)S1(=O)=O, CON to produce CON=C1c2nc(Br)ccc2N(C)S(=O)(=O)C1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.