Using O=S1(=O)N=C(c2ccc(Cl)cc2)C(c2ccc(Cl)cc2)=N1, C[Mg]Br to produce CC1(c2ccc(Cl)cc2)NS(=O)(=O)N=C1c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.