(+)-[10aS(E + Z)]-4-Chloro-9-ethylidene-6,8,9,10,10a,11-hexahydroimidazo[4,5,1-jk]pyrrolo[2,1-c][1,4]benzodiazepine-1(2H)-thione AIDS-044617 AIDS044617 Imidazopyrrolobenzodiazepinone deriv. TIBO deriv.