And this enzyme that carries out this process is an isomerase. So it's called CIS delta three enol coenzyme Aisomerase. And what this does is this enzyme changes the location and the configuration of this double bond. So it takes a double bond and places it onto this position. And that also changes the configuration from CIS to trans. So we transform the CIS delta three enol coenzyme A into a trans delta two enol coenzyme A.