Using [N-]=[N+]=[N-], CN(Cc1ccc2c(Br)c(OCC#N)ccc2c1)C(=O)c1cn(C)c2ccccc12 to produce CN(Cc1ccc2c(Br)c(OCc3nnn[nH]3)ccc2c1)C(=O)c1cn(C)c2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.