4-(3-oxobutyl)-5-ethyl-1,2,3,4-tetrahydro-2-methyl-11H-pyrido[3,4-a]carbazole

5-ethyl-2-methyl-1,3,4,11-tetrahydropyrido[3,4-a]carbazole

5-oxo-2-phenylhexanenitrile

6-氯勒皮啶

4,7-二甲基喹啉