The title compound, CHO, is a steroid synthesized through a rearrangement of a sarsasapogenin derivative in acidic medium. The newly formed ring is a tetra-hydro-2-pyran heterocycle substituted by two methyl groups placed in equatorial positions. This ring displays a chair conformation, while di-hydro-furan ring , to which it is bonded, has an envelope conformation. The mol-ecules are associated by weak O-H⋯O hydrogen bonds to form chains running in the [101] direction in the crystal.
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