Using FC(F)(F)c1cccc(Br)c1, CC(C)(C)OC(=O)N[C@H]1CC[C@@H]2CNC[C@@H]21 to produce CC(C)(C)OC(=O)N[C@H]1CC[C@@H]2CN(c3cccc(C(F)(F)F)c3)C[C@@H]21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.