Using CC(C)(C)OC(=O)N1CCNCC1, N#CCCC(Br)c1ccccc1 to produce CC(C)(C)OC(=O)N1CCN(C(CCC#N)c2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.