Using CCc1nc2cnc3ccccc3c2n1CCOCCON1C(=O)c2ccccc2C1=O, [NH4+] to produce CCc1nc2c(N)nc3ccccc3c2n1CCOCCON, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.