Now let's move on to step number two. In step number two, we see that the citrate cannot actually undergo the decarboxylation directly because the hydroxyl group on citral is not positioned on the correct location. And so what we do is we use a special type of enzyme that transforms the citrate into ISO citrate, which basically is an isomer of this molecule. So now the isocytrate is able to undergo the decarboxylation reaction. So basically, I group step one and step two into the same stage. Let's call that stage one because these two steps involve preparing our molecule for decarboxylation.