Using O=C1CCC(=O)N1Br, CCc1cn(S(=O)(=O)c2ccc(C)cc2)c2ncc3cnn(C)c3c12 to produce CCc1cn(S(=O)(=O)c2ccc(C)cc2)c2ncc3c(Br)nn(C)c3c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.