Using O=S(Cl)Cl, CC(C)Cn1c(CO)c(-c2ccc(F)cc2)c2cc(OCc3ccccc3)ccc2c1=O to produce CC(C)Cn1c(CCl)c(-c2ccc(F)cc2)c2cc(OCc3ccccc3)ccc2c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.