I wouldn't do this, I really wouldn't, I can see it producing GABA downregulation, and coming off it won't be fun at all.
Practically speaking, if this was dissolved and given as a depot injection, I can see it being immediately attacked by one or other of the bodys esterases, and being turned straight back into GABA, rather than whatever fatty acid ester you produced.
A med you could look into is tiagabine, it acts as a selective GABA reuptake inhibitor, so, short term it could work for coming off clonazepam.
Benzos tend to produce adrenergic symptoms in WD, so a beta blocker or alpha-2 adrenoreceptor agonist like clonidine might help make it less painful.
I think a better site than here to help you out, would be
www.bluelight.ru its not a chemistry orientated site, but I think its more what your looking for in this case