Using CCC(=O)Cn1c(CC(F)(F)F)nc2cc(Cl)c(Cl)cc21 to produce CCC(O)Cn1c(CC(F)(F)F)nc2cc(Cl)c(Cl)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.