Using Nc1nc(N)nc(N)n1, O=C(Oc1ccccc1)Oc1ccccc1 to produce O=C(Nc1nc(NC(=O)Oc2ccccc2)nc(NC(=O)Oc2ccccc2)n1)Oc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.