Using Nc1nc2ccccc2c2c1nc(CN1C(=O)c3ccccc3C1=O)n2CC1(O)CCC1 to produce NCc1nc2c(N)nc3ccccc3c2n1CC1(O)CCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.