Using O=S(Cl)Cl, Cc1ccc(-c2c(CO)n(CC(C)C)c(=O)c3ccc(OCc4ccccc4)cc23)cc1 to produce Cc1ccc(-c2c(CCl)n(CC(C)C)c(=O)c3ccc(OCc4ccccc4)cc23)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.