1-[2-[4-(2,6-dimethylphenyl)piperazin-1-yl]-2-oxoethyl]pyrrolidin-2-one

2-(2-oxopyrrolidin-1-yl)-N-(1-phenylpropan-2-yl)acetamide

N-(2-adamantyl)-2-(2-oxopyrrolidin-1-yl)acetamide

1-(2-乙氧基乙基)-4-乙基哌嗪

2,4,6,7,8,8a-hexahydro-1H-pyrrolo[1,2-a]pyrazin-3-one