Using O=C(CBr)c1ccccc1[N+](=O)[O-], N=C(N)NC(N)=S to produce N=C(N)Nc1nc(-c2ccccc2[N+](=O)[O-])cs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.