Using CC(=O)c1ccc2c(c1)CCN(C(=O)OC(C)(C)C)C2, [Br-] to produce CC(C)(C)OC(=O)N1CCc2cc(C(=O)CBr)ccc2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.