6H-Benzofuro[3a,3,2-ef][2]benzazepine-11(12H)-carboxylic acid, 3-bromo-2-(3-cyclopentylpropoxy)-4a,5,9,10-tetrahydro-10-(hydroxymethyl)-6-oxo-, 2,2-dimethylpropyl ester, (4aR,10S)- AIDS-185689 AIDS185689