Using COC(=O)C(=O)C(F)(F)F, Nc1nc(-c2ccc(Br)cc2)cs1 to produce COC(=O)[C@@H](Nc1nc(-c2ccc(Br)cc2)cs1)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.