Using COc1ccc(CNc2nc(CCC(N)=O)nc3sc4ccccc4c23)cc1Cl to produce COc1ccc(CNc2nc(CCC#N)nc3sc4ccccc4c23)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.