9,11a-Methano-11aH-cyclohepta[a]naphthalene-4-carboxylic acid, 5-(benzoyloxy)tetradecahydro-4-(hydroxymethyl)-11b-methyl-8-methylene-, (4S,4aR,5R,11bS)- AIDS-187717 AIDS187717 Scopadulcic acid A