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. Now this is an important step because now the second enzyme, namely the enolco enzyme A hydratase e, and the beta oxidation pathway can now act on this molecule and then transform it into ultimately acetylco enzyme A. And then we can have three more cycles of beta oxidation to basically release and produce all those acetylco enzyme A molecules. So we see that anytime we ingest a fatty acid that contains an odd number of double bonds, this is basically what we're going to find taking place.