1-[(1R,2S,4R,7S)-3,3-Dichloro-4,11,11-trimethyltricyclo[5.4.0.02,4]undecan-7-yl]ethanone

The title compound, C16H24Cl2O, crystallizes with two independent molecules in the asymmetric unit. Each molecule is built up from two fused six-membered rings, one of which is fused to a three-membered ring. The two molecules differ essentially in the orientation of two of the methyl groups. The dihedral angles between the mean planes through the two six-membered rings are 57.98 (13) and 55.29 (13)°. The molecular conformation is stabilized by intramolecular C—H...Cl hydrogen bonds.