Using C[C@@H](O)c1nc2cnc3ccsc3c2n1C1CCNCC1, C=CC#N to produce C[C@@H](O)c1nc2cnc3ccsc3c2n1C1CCN(CCC#N)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.