Using COC(=O)c1nc(Br)c2c(c1O)CCC(=O)N2Cc1ccccc1, N#C[Cu] to produce COC(=O)c1nc(C#N)c2c(c1O)CCC(=O)N2Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.