Using O=C([O-])[O-], COC(=O)c1c(O)cc(C(F)(F)F)nc1C(F)(F)F to produce COC(=O)c1c(OC)cc(C(F)(F)F)nc1C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.