Using CN(C)C=O, CCOC(=O)C(C)(C)CCn1ncc2c(Br)cccc21 to produce CCOC(=O)C(C)(C)CCn1ncc2c(C#N)cccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.