5,6,7,8-tetrahydro-4H-cyclohepta[d][1,2]oxazole-3-carboxylic acid

2-氧代环庚烷甲酸乙酯

4-(4-硝基苄基)吗啡啉

methyl 3-(2-oxocycloheptyl)propanoate

2-乙基环庚烷-1-酮