4-[4-(2-cyclohexyloxy-5-methylsulfonylbenzoyl)piperazin-1-yl]-3-fluorobenzonitrile
4-[4-[2-(cyclohexoxy)-5-methylsulfonyl-benzoyl]piperazin-1-yl]-3-fluoro-benzonitrile
4-[4-[[2-(cyclohexoxy)-5-methylsulfonylphenyl]-oxomethyl]-1-piperazinyl]-3-fluorobenzonitrile
4-[4-[2-(cyclohexoxy)-5-mesyl-benzoyl]piperazin-1-yl]-3-fluoro-benzonitrile
4-[4-(2-cyclohexyloxy-5-methylsulfonyl-phenyl)carbonylpiperazin-1-yl]-3-fluoro-benzonitrile