Using COC(=O)c1cc(C2CC2)c(OC(F)(F)F)c(C2CC2)c1 to produce OCc1cc(C2CC2)c(OC(F)(F)F)c(C2CC2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.