(1 S ,3 S ,8 R ,10 R ,11 R )-3,7,7,10-Tetramethyltricyclo[6.4.0.0 1,3 ]dodecan-11-ol

The title compound, C16H28O, was synthesized by three steps from β-himachalene (3,5,5,9-tetramethyl-2,4a,5,6,7,8-hexahydro-1H-benzocycloheptene), which was isolated from the essential oil of the Atlas cedar (Cedrus atlantica). The molecule is built up from fused six- and seven-membered rings and an appended three-membered ring. The six-membered ring has twist-boat conformation, whereas the seven-membered ring displays a chair conformation. In the crystal, molecules are linked into chains propagating along the a-axis direction by O-H...O hydrogen bonds.