1,4,7,10-tetraoxacyclotetradecane-11,14-dione

1,4,7,10,15,18,21,24-八氧杂环二十八烷-11,14,25,28-四酮

1-[2-(1H-indol-3-yl)ethyl]pyrrolidine-2,5-dione

methyl 4-[2-(1H-indol-3-yl)ethylamino]-4-oxobutanoate

4-oxo-4-(2-trimethylsilylethoxy)butanoate