1-[Bis(4-fluorophenyl)methyl]piperazine1-(bis(4-fluorophenyl)methyl)piperazine1-(4,4′-Difluorobenzhydryl)piperazine1-Bis(4-fluorophenyl)methyl piperazine1-(4,4′-二氟二苯甲基)哌嗪1-双(4-氟苯基)甲基哌嗪1-(4,4'-Difluorobenzhydryl)piperazine1-[Bis(4-fluorophenyl)methyl]piperazine 97%