Using CCOC(=O)C(F)(F)F, N#CCC(O)c1ccc(F)c(Br)c1 to produce O=C(NCCC(O)c1ccc(F)c(Br)c1)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.