Using CCCCc1cc(C(N)=O)ccc1OCCCNc1cnn(CC)c(=O)c1Br to produce CCCCc1cc(C#N)ccc1OCCCNc1cnn(CC)c(=O)c1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.