Using O=C([O-])C1=Cc2cc(OCc3ccc(F)cc3F)ccc2CCC1 to produce O=C(O)C1=Cc2cc(OCc3ccc(F)cc3F)ccc2CCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.