Using CCOC(=O)CC(=O)O, Nc1ccc(N)c([N+](=O)[O-])c1 to produce CCOC(=O)CC(=O)Nc1ccc(NC(=O)CC(=O)OCC)c([N+](=O)[O-])c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.