methyl 4-[4-[2-(3,4-difluorophenyl)ethyl]piperazin-1-yl]-5H-pyrimido[5,6-b]indole-8-carboxylate
4-[4-[2-(3,4-difluorophenyl)ethyl]-1-piperazinyl]-5H-pyrimido[5,6-b]indole-8-carboxylic acid methyl ester
4-[4-[2-(3,4-difluorophenyl)ethyl]piperazin-1-yl]-5H-pyrimido[5,6-b]indole-8-carboxylic acid methyl ester