(3R,5S,6S,8R,10S)-8-Acetyl-7-hydr­oxy-3-isopropenyl-10-methylperhydro­phenanthren-1-one

In the crystal structure of the title compound, C₂₀H₃₀O₃, there is an intra­molecular hydrogen bond between the hydroxyl and acetyl groups [O...O = 2.722 (3) Å].