Using O=C(O)c1cc(F)c(F)cc1F, Nc1cccn(-c2ccc(F)cc2)c1=O to produce O=C(Nc1cccn(-c2ccc(F)cc2)c1=O)c1cc(F)c(F)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.