(4ar,8ac)-1,2,3,4,4a,5,8,8a-octahydro-1t,4t,5c,8c-dimethano-naphthalene-2c,3c-dicarboxylic acid-anhydride

1-(benzenesulfonyl)-2-bromobenzene

3-[N-(苯基)氨基]-3-氧代丙酸乙酯

2-bromo-2-methylpropanenitrile