Reaction one. So we begin with our serine. And this enzyme dehydrates basically allows us to undergo a dehydration step. And so what happens is this hydroxide group combines with an H atom, this H atom here, to basically form a double bond between this carbon, this carbon, and we form this high energy intermediate molecule. Now, this high energy intermediate molecule is unstable, and so it rarely converts into this final product. And this is our diamondation step.