Using CS(=O)(=O)Cl, Cc1nnc(-c2ccc3occ(-c4ccc(O)cc4)c3c2)o1 to produce Cc1nnc(-c2ccc3occ(-c4ccc(OS(C)(=O)=O)cc4)c3c2)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.