[(3S,8R,9S,10R,13S,14S,17R)-17-乙酰基-17-乙酰氧基-6,10,13-三甲基-1,2,3,8,9,11,12,14,15,16-十氢环戊烯并[a]菲-3-基]3-环戊基丙酸酯
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