Using [NH4+], CCOC(=O)c1nn(C(C)(C)C)c(=O)n1CC(=O)C(C)(C)C to produce CC(C)(C)c1cn2c(=O)n(C(C)(C)C)nc2c(=O)[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.