Using N=C(CCC(F)(F)F)Nc1ccc(OCC(F)(F)F)cc1, CCOC(=O)CC(=O)OCC to produce O=c1cc(O)nc(CCC(F)(F)F)n1-c1ccc(OCC(F)(F)F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.