(1R,3S)-5-{2-[(1R,3aS,7aR)-1-((R)-5-Hydroxy-1,5-dimethyl-hexyl)-7a-methyl-octahydro-inden-4-ylidene]-ethylidene}-4-methylene-cyclohexane-1,3-diol 1.Alpha.,25-Dihydroxy-26,27-hexadeuterovitamin D3 AIDS-109014 AIDS109014