Using O=S(=O)(Cl)c1ccccc1, CCOC(=O)c1c(C)nc2sc(Br)cc2c1N to produce CCOC(=O)c1c(C)nc2sc(Br)cc2c1NS(=O)(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.