7-chloro-2-oxo-3a-(2'-oxo-2',3'-dihydro-1'H-indol-3'-yl)-2,3,3a,4,5,10-hexahydro-pyrrolo(3,2-a)carbazole-1-carbonitrile
7-chloro-2-oxo-3a-(2'-oxo-2',3'-dihydro-1'h-indol-3'-yl)-2,3,3a,4,5,10-hexahydro-pyrrolo(3,2-a)carbazole-1-carbonitrile