Using O=C(O)CCC(O)c1ccc(-c2ccc([N+](=O)[O-])cc2)cc1 to produce Nc1ccc(-c2ccc(C(O)CCC(=O)O)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.