Using CCc1nc2cnc3cc(CCN4C(=O)c5ccccc5C4=O)ccc3c2n1CC(C)(C)O, [NH4+] to produce CCc1nc2c(N)nc3cc(CCN4C(=O)c5ccccc5C4=O)ccc3c2n1CC(C)(C)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.