Using O=C(Nc1nnn[nH]1)c1cncc(Cl)n1, Cc1ccc(N)cc1 to produce Cc1ccc(Nc2cncc(C(=O)Nc3nnn[nH]3)n2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.