Using O=C(NC1CC1c1cncc(-c2cccc(Cl)c2Cl)c1)OCc1ccccc1, CCS(=O)(=O)Cl to produce CCS(=O)(=O)NC1CC1c1cncc(-c2cccc(Cl)c2Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.