Using O=S(Cl)Cl, CCCCCCCCOc1ccc2cc(S(=O)(=O)[O-])ccc2c1 to produce CCCCCCCCOc1ccc2cc(S(=O)(=O)Cl)ccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.