点击放大环状聚乙二醇-聚乙二醇臂-羟基(n=45)274-crown-91-PEG45-OH; Hydroxyl-terminated PEG arm on a cyclic poly(ethylene glycol) scaffold (arm n=45)
点击放大环状聚乙二醇-聚乙二醇臂-炔基(n=45)274-crown-91-PEG45-Alkyne; Terminal alkyne-terminated PEG arm on a cyclic poly(ethylene glycol) scaffold (arm n=45)