Using C=CCC1(c2ccc(C#N)cc2-c2ccccc2)CCCc2cncn21 to produce CCCC1(c2ccc(C#N)cc2-c2ccccc2)CCCc2cncn21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.