Using C[C@@]1(c2nc3c(Br)cccc3s2)CCCN1C(=O)OCc1ccccc1, N#C[Cu] to produce C[C@@]1(c2nc3c(C#N)cccc3s2)CCCN1C(=O)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.