(8R,9S,13S,14S,17S)-13-乙基-3-甲氧基-6,7,8,9,11,12,14,15,16,17-十氢环戊烯并[a]菲-17-醇

左炔诺孕酮

2-乙基-1,3-环戊烷二酮

(1)-13-Ethyl-3-methoxygona-1,3,5(10),8,14-pentaen-17-one

2-[2-(3,4-二氢-6-甲氧基-1(2H)-萘亚基)乙基]-2-乙基环戊烷-1,3-二酮