Using O=C([O-])[O-], CCOC(=O)c1cc(O)n(Cc2ccccc2F)n1 to produce CCOC(=O)c1cc(OC)n(Cc2ccccc2F)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.