Using CCOC(=O)C(=O)CC(=O)c1c(Cl)cccc1Cl, O=N[O-] to produce CCOC(=O)C(=O)C(NO)C(=O)c1c(Cl)cccc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.