Using CC(C)(C)OC(=O)N1C[C@@H]2C[C@H]1CN2, CCOC(=O)C(C)(C)Br to produce CCOC(=O)C(C)(C)N1C[C@@H]2C[C@H]1CN2C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.