CSCC(=O)N1CCN(c2ccc(C(F)(F)F)cc2)CC1
I tried to design a compound that was similar to the 1-{4-[(3-fluorophenyl)sulfonyl]piperazin-1yl)ethan-1-one}. The methyl and trifluoroethane don't add too much molecular weight, but they might increase the potency.