(-)-(R)-9-Chloro-6-(cyclopropylmethyl)-4,5,6,7-tetrahydro-4-methylimidazo[4,5-1-jk][1,4]benzodiazepin-2-(1H)-thione AIDS-044604 AIDS044604 TIBO, 9Cl-4Me-6-cPrMe Thione deriv.