4-[4-[2-(3,4-difluorophenyl)ethyl]piperazin-1-yl]-9-nitro-5-(2-phenylethyl)pyrimido[5,6-b]indole
4-[4-[2-(3,4-difluorophenyl)ethyl]-1-piperazinyl]-9-nitro-5-(2-phenylethyl)pyrimido[5,6-b]indole