Using O=C([O-])[O-], Nc1cc(Cl)cc(C(=O)O)c1[N+](=O)[O-] to produce COC(=O)c1cc(Cl)cc(N)c1[N+](=O)[O-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.