Using CCOC(=O)CCc1scc(-c2ccc(N)cc2)c1-c1ccc(C#N)cc1C, Br to produce CCOC(=O)CCc1scc(-c2ccc(Br)cc2)c1-c1ccc(C#N)cc1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.