Using COC(=O)c1c(-c2ccc(F)cc2)nc(O)nc1C(C)C, O=S(Cl)Cl to produce COC(=O)c1c(-c2ccc(F)cc2)nc(Cl)nc1C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.