Using CCOCc1nc2cnc3cc(OCc4ccccc4)ccc3c2n1CC1COC(C)(C)O1, [NH4+] to produce CCOCc1nc2c(N)nc3cc(OCc4ccccc4)ccc3c2n1CC1COC(C)(C)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.