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The title compound, C24H39NO2 (systematic name: 4-{[1,4a-dimethyl-7-(propan-2-yl)-1,2,3,4,4a,5,6,7,8,9,10,10a-dodecahydrophenanthren-1-yl]carbonyl}morpholine), has been synthesized from Δ8-dihydroabietic acid. Two cyclohexene rings adopt half-chair conformations, whereas the cyclohexane and morpholine rings are each in the chair conformation. Two methyl groups are in an axial position with respect to the tricyclic hydrophenanthrene nuclei.