184691-55-2 1H-Pyrido(3,4-b)indol-1-one, 2,3,4,9-tetrahydro-9-methyl-2-(4-(4-phenyl-1-piperazinyl)butyl)- 2,3,4,9-Tetrahydro-9-methyl-2-(4-(4-phenyl-1-piperazinyl)butyl)-1H-pyrido(3,4-b)indol-1-one