Using [N-]=[N+]=[N-], Cc1[nH]c(C(=O)NC2CCN(c3ncc(C#N)s3)CC2)c(Cl)c1Cl to produce Cc1[nH]c(C(=O)NC2CCN(c3ncc(-c4nnn[nH]4)s3)CC2)c(Cl)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.