Using O=[Cr](=O)([O-])Cl, CSc1ccc(C2(O)CCC=C2c2ccc(F)cc2)cc1 to produce CSc1ccc(C2=C(c3ccc(F)cc3)C(=O)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.