And this causes a build up, is citrate, which in turn causes a build up of citrate molecules. And once we actually form citrate, which involves transferring acetyl, the Cetil group from acetyl co enzyme onto oxalacetate, then that citrate can actually move across the inner and the outer membrane of the mitochondria and into the cytoplasm of that cell. So in step three, we have citrate is then transported across the membrane and into the cytoplasm of that cell. Now, the citrate itself is not actually used in the fatty acid synthesis process. We have to actually obtain that acetylcoanson a back. And so what happens is we have a process in which we take that citrate and we form back that oxylo acetate that we begin with.