9-Chloro-6-(3-methylbut-2-en-1-yl)-4,5,6,6a,7,8-hexahydrocyclopenta[ef]imidazo[4,5,1-jk][1,4]benzodiazepine-2(1H)-thione AIDS-044601 AIDS044601 Imidazobenzodiazepinone deriv. TIBO deriv.