Using [Cl-], C[C@H](CCOS(=O)(=O)Cc1ccccc1)NS(=O)(=O)Cc1ccccc1 to produce C[C@H](CCCl)NS(=O)(=O)Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.