Using C[C@@H](NC1CCCc2c1[nH]c1ccc(Br)cc21)c1ccccc1 to produce C[C@@H](N[C@@H]1CCCc2c1[nH]c1ccc(Br)cc21)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.