Using CCc1cc([C@H]2O[C@@H](n3cnc4c(Cl)nc(Cl)nc43)[C@H](OC(C)=O)[C@@H]2OC(C)=O)on1, N[C@H](CO)Cc1ccccc1 to produce CCc1cc([C@H]2O[C@@H](n3cnc4c(N[C@H](CO)Cc5ccccc5)nc(Cl)nc43)[C@H](OC(C)=O)[C@@H]2OC(C)=O)on1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.