Using CCCCN1CCOc2c(Br)cc(C(=O)OC)cc21, N#C[Cu]C#N to produce CCCCN1CCOc2c(C#N)cc(C(=O)OC)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.