Using CC1Cc2cccc(S(=O)(=O)NC(C)(C)C)c2S1, COCBr to produce COCc1ccc2c(c1S(=O)(=O)NC(C)(C)C)SC(C)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.