Using COC(=O)c1cc(Oc2ccc([N+](=O)[O-])cc2)ccc1OC to produce COc1ccc(Oc2ccc([N+](=O)[O-])cc2)cc1C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.