乙酰乙酸乙酯

3-Methyl-7a-pyrrolidin-1-yl-3a,4,5,6,7,7a-hexahydro-1H-indole-2-carboxylic acid ethyl ester

1-吡咯烷-1-环己烯

ethyl 2-methyl-2H-azirine-3-carboxylate

环己酮