Using [NH4+], CC1(C)Oc2ccc([N+](=O)[O-])cc2C(n2ccccc2=O)=C1CBr to produce CC1(C)Oc2ccc([N+](=O)[O-])cc2C(n2ccccc2=O)=C1CN, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.