Using [N-]=[N+]=[N-], CCCc1c(Cl)ncnc1Cn1ccnc1-c1cccc(F)n1 to produce CCCc1c(Cn2ccnc2-c2cccc(F)n2)ncnc1N=[N+]=[N-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.