Using COC(=O)c1cc2c(Cl)c(OC)c([N+](=O)[O-])cc2o1 to produce COc1c([N+](=O)[O-])cc2oc(C(=O)O)cc2c1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.