Using COc1cc2ncc(Cl)nc2cc1OC, CC(=O)O[C@H]1CC[C@@H](O)CC1 to produce COc1cc2ncc(O[C@H]3CC[C@@H](OC(C)=O)CC3)nc2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.