Using CCOC(=O)c1cc(O)n(-c2ccc(C(F)(F)F)cc2)n1 to produce O=C(O)c1cc(O)n(-c2ccc(C(F)(F)F)cc2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.