1-Phenyl-4-((1-oxo-2,3,4,9-tetrahydro-1H-pyrido(3,4-b)indol-6-yl)carbonyl)piperazine 184691-69-8 Piperazine, 1-phenyl-4-((1-oxo-2,3,4,9-tetrahydro-1H-pyrido(3,4-b)indol-6-yl)carbonyl)-