So let's suppose we have an odd chain fatty acid that contains five carbon atoms. So we have carbon atom 1234 and five. So once we activate this molecule and we transport into the matrix of the mitochondria, in the matrix, it undergoes a beta oxidation process in the same way that the even chain fatty acid undergoes a beta oxidation process. Now, remember that in the even chain fatty acid breakdown, we generate acetyl coenzyme A molecules only. And though the acetyl coenzyme A molecules are fed into the citric acid cycle to help generate, to help generate ATP molecules. But in the case of odd chain fatty acid breakdown, not only do we generate the acetyl coenzyme A, we also generate a proponel coenzyme A three carbon molecule.