3-(5-bromopyridine-3-carbonyl)-1-methylpyrrolidin-2-one

4-(二甲基氨基)丁酸

2-but-3-enylidene-1-methylpyrrolidine

1-methyl-2,2-bis(3-butenyl)pyrrolidine

1,5-dimethyl-4-prop-2-enyl-2,3-dihydropyrrole