Using O=C(O)c1cc(Oc2ccc(C(F)(F)F)c(Cl)c2)ccc1O, C to produce COC(=O)c1cc(Oc2ccc(C(F)(F)F)c(Cl)c2)ccc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.