Crystal structure of 3a,6,6,9a-tetra­methyl­dodeca­hydro­naphtho­[2,1-b]furan-2-ol

The title compound (common name: sclaral), C(16)H(28)O(2), is a sclareolide derivative, which was synthesized from sclareolide itself. In the mol­ecule, the two six-membered rings, A and B, of the labdane skeleton adopt chair conformations and the five-membered O-containing heterocyclic ring C displays an envelope conformation, with the methine C atom of the fused C—C bond as the flap. In the crystal, mol­ecules are linked by O—H⋯O hydrogen bonds, forming chains propagating along [100].