Using Nc1nc(Cl)c(N)c(Cl)n1, N[C@H]1CC[C@H](O)CC1 to produce Nc1nc(Cl)c(N)c(N[C@H]2CC[C@H](O)CC2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.