Using N=C(N)N, COc1ccc2c(C(=O)Cl)cn(-c3ccnc4ccccc34)c2c1 to produce COc1ccc2c(C(=O)NC(=N)N)cn(-c3ccnc4ccccc34)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.