Using CC(C)[C@H]1CN(c2ccc(C(F)(F)F)nc2)C(=O)N1, CC(C)(C)OC(=O)CBr to produce CC(C)[C@H]1CN(c2ccc(C(F)(F)F)nc2)C(=O)N1CC(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.