Using CN(C[C@H]1CC[C@H](C=O)CC1)C(=O)OC(C)(C)C, BrC(Br)(Br)Br to produce CN(C[C@H]1CC[C@H](C=C(Br)Br)CC1)C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.