Using C=CCCCBr, COC(=O)[C@H](CNS(=O)(=O)c1ccccc1[N+](=O)[O-])NC(=O)OC(C)(C)C to produce C=CCCCN(C[C@H](NC(=O)OC(C)(C)C)C(=O)OC)S(=O)(=O)c1ccccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.