Now, the glue 165 in the first step acts as a base, and the his 195 in the first step acts as an acid. So essentially, this histidine 95 donates an H to this carbon. So essentially, this pi bond here goes on to take the H away. At the same time this acts as a base and takes away that H. And so what happens is, once this bond is broken, when the H is taken away, this reforms a pi bond between this carbon one and this carbon two to form this intermediate that contains two alcohol groups. And that's why we call it an anodial intermediate dial simply means we have two hydroxyl, two alcohol groups, one here and one here. Now, by the way, if we take this molecule and we flip it upside down, this is basically the orientation of this molecule here.