Using CC(C)(C)OC(=O)N1C[C@H]2CCC(=O)[C@H]2C1 to produce CC(C)(C)OC(=O)N1C[C@H]2CC(Br)C(=O)[C@H]2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.