AIDS-185691 AIDS185691 Carbamic acid, ethyl-, (4aR,6Z,10S)-3-bromo-11-[(ethylamino)carbonyl]-4a,5,9,10,11,12-hexahydro-10-(hydroxymethyl)-6-[2-(4-nitrophenyl)ethylidene]-6H-benzofuro[3a,3,2-ef][2]benzazepin-2-yl ester