16-alpha-氯-20-氧代孕甾-5-烯-3-beta-基乙酸酯

[(3S,8R,9S,10R,13S,14S)-17-(1-acetyloxyethenyl)-10,13-dimethyl-2,3,4,7,8,9,11,12,14,15-decahydro-1H-cyclopenta[a]phenanthren-3-yl] acetate