Using COC([O-])[O-], O=C(O)c1cccc([N+](=O)[O-])c1C(=O)O to produce COC(=O)c1cccc([N+](=O)[O-])c1C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.