Using CCCCOc1nc(N)c2ncn(Cc3cccc(CO)c3)c2n1, CCN(CC)CC to produce CCCCOc1nc(N)c2ncn(Cc3cccc(CC#N)c3)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.