Using NNc1ccc([N+](=O)[O-])cc1, CCOC(=O)CC(C)=O to produce CC1=NN(c2ccc([N+](=O)[O-])cc2)C(=O)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.