Using CC1=C2C=c3c(cnn3C[C@H](C)N=[N+]=[N-])=C2C(C)(C)C=C1 to produce CC1=C2C=c3c(cnn3C[C@H](C)N)=C2C(C)(C)C=C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.