184691-28-9 1H-Indole-2-carboxylic acid, 3-(2-oxo-2-((2-(4-phenyl-1-piperazinyl)ethyl)amino)ethyl)- 3-(2-Oxo-2-((2-(4-phenyl-1-piperazinyl)ethyl)amino)ethyl)-1H-indole-2-carboxylic acid