Using CSc1c(CC(N)=O)ccc2c3ccccc3n(Cc3ccccc3)c12 to produce CSc1c(CC#N)ccc2c3ccccc3n(Cc3ccccc3)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.