Using C[Mg]Br, CON(C)C(=O)c1cc(COc2ccccc2)nn1S(=O)(=O)N(C)C to produce CC(=O)c1cc(COc2ccccc2)nn1S(=O)(=O)N(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.