Using CCOC(=O)c1c(Cl)nc2ccc(Cl)cc2c1-c1ccccc1, OCC(F)(F)F to produce CCOC(=O)c1c(OCC(F)(F)F)nc2ccc(Cl)cc2c1-c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.