Using [NH4+], CCOCc1nc2cnc3ccccc3c2n1CCCC(=O)N1CCOCC1 to produce CCOCc1nc2c(N)nc3ccccc3c2n1CCCC(=O)N1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.