Using CN(C)C=O, CCOc1ccc(-c2nc(CCC(=O)c3ccccc3Br)cs2)cc1OCC to produce CCOc1ccc(-c2nc(CCC(=O)c3ccccc3C#N)cs2)cc1OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.