3-[(4-nitrophenyl)methoxy]-7,8,9,10-tetrahydrobenzo[c]chromen-6-one

螺[1-氮杂双环[2.2.2]辛烷-8,5'-咪唑烷]-2',4'-二酮

螺[1-氮杂双环[2.2.2]辛烷-3,2'-环氧乙烷]

2,2-二羟基甲基-1-氮杂双环[2.2.2]辛-3-酮

奎宁环-3-甲腈