Using CCB(CC)CC, Cc1ccc(S(=O)(=O)n2ccc3c(I)c(Br)cnc32)cc1 to produce CCc1c(Br)cnc2c1ccn2S(=O)(=O)c1ccc(C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.