Using CC(C)(C)OC(=O)NCCC(=O)ON1C(=O)CCC1=O, Nc1cnn2c1NCC2 to produce CC(C)(C)OC(=O)NCCC(=O)Nc1cnn2c1NCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.