(3S,5aR,5bR,6S,11aS,13bS)-3-(1-Hydroxy-1-methylethyl)-5a,5b,8,8,11a,13b-hexamethylicosahydro-1H-cyclopenta[a]chrysen-6-ol 7beta,22-Dihydroxyhopane AIDS-113953 AIDS113953