 Okay, cool. So, this is a photochemical electrocyclic reaction. So, the thing is going, it's only reacting by itself, okay? So, what's going to happen here? So, if you look at the other ones, right? So, it should show you that you're taking, I mean, you should have to know that what you're doing is taking this double bond here and making two double bonds here and here, right? So, we're sacrificing this pi bond and this sigma bond for these two double bonds here, okay? The only question is really which way is the thing going to turn? Con or disc rotatory, right? So, when you look at these light reactions, when you have these cyclobutane rings, right? When you do light, they're going to both turn, you know, in, okay? So, when you do that, right, that's disc rotatory, okay? So, do you guys see, they're turning opposite ways, right? Because you remember, we got to spiral the same way to become rotatory, okay? So, these things, right, they're both sticking up, they're going to turn like that, disc, okay? So, what's going to happen? Oh, I guess I should have told you. H, V, or whatever. Okay? So, remember when we have this, it's these electrocyclic reactions, photochemical means because there's light involved. That's one, that's the other one, okay? Remember they happen at the same time, okay? So, these are both up like this, so they're both going to turn in, okay? Does that make sense? So, did we break this bond here or is there still a bond there? There's still a bond, right? We only broke that pi bond. But what did we make here? What type of component? Very good, guys, a diene, okay? So, those, this is how you make dienes, okay? So, remember, so they're sticking up like this, right? The two meppler groups are going to turn in like that, okay? So, you got, if you guys are using your fingers, it's okay. Just remember, like that, okay? So, you see they're sticking up towards us, like that, okay? So, meppler group, meppler group, like that. This is road, whatever, this is road. Is that okay? It's something. ATO or what? This. Okay. Instead of going. Okay, any questions on that one? No.