On top of that, all the steps are actually reversed in this synthesis process. And that's what we mean by these processes being mere images of one another. So in this particular case, we want to actually synthesize these fatty acids. We begin with the activated Acyl units and the activated melonial units, or Malanol units. Now we take the activated melanol units, and we basically undergo a condensation reaction with this activated Acyl unit. And what that does is it helps us generate that sigma bond.