 Okay, so let's try this one then. So notice, what we're going to do is we're going to acidify our cyanohydrin. And remember, how did I make this? I used potassium cyanide and HCM with that ketone, right? So, I ordered the aldehyde in this case. So you should be able to do that mechanism there, okay? So let's erase that part. That's not the mechanism we're interested in. We're interested in acidifying this cyanohydrin and taking the cyanogroup and making it into a carboxylic acid, okay? So how do we do that? Can I erase this part? Is everybody got one now? So, remember, we've got an acid in there. So the first step is going to be what? Acid base, right? So what's more basic? Nitrogen or aldehyde? You guys remember? What did we say? Nitrogen, why? That's a less selector negative than what? Postergene, right? You guys know that. So nitrogen is going to be the one that removes the proton. Okay, remember, all acid bases are in the equilibrium. All acid bases. So do you see, well, do you see what we've made there, guys? What have we been calling something that has that positive charge? These kind of super electrophiles, right? Okay, so super electrophile, right? It wants to be attacked, right? Where does it want to be attacked, you guys think? Here, here, here, where? Here, here, anything? Where, here, yes. Why? That's next to that super electrophile, just like every other super electrophile that you've seen. Because that's gonna get rid of the positive charge. And this is going to be an equilibrium right now because it could close back down. So we got that, whoops, no we don't. We got that. We've got a variety of bases in here just like our other mechanism. So I'm just gonna put V, remove that proton there. So you guys see we're getting close to the product. So the next step that's going to happen, you guys know, acid base reaction. Yeah, super electrophile, right? I'm not looking for it. It's going to be attacked by another water molecule. Still in equilibrium in there. We've got some base, probably water, that proton there, acid base reaction. You guys have noticed something about this whole chapter. It's a bunch of acid base reactions followed by a nucleophile, electrophile. Just everything you guys have learned up to this point, back and forth, back and forth. Happened now. Anybody tell me? Did anybody tell me? I thought it was going to go back to the product. I think we're going to have to change it right now. And kick the ammonia, right? Kick the ammonia out, okay? What is that? Is this the first, this is the first step we're going to show what? Anybody tell me? That's different than what we've shown every other step. So we're going to... Yep, a forward error. Forward, sorry. That's all right. Can I erase all the top of the mechanism? This is the driving force of the reaction. A little bit more like how we drew the starter material. So I just did kind of a rotation. We also have, of course, ammonia in there. And some base, it might be ammonia, it might be water, it might be whatever, is going to finish this up and de-protein and give us the product, which is this. Alpha hydroxy carbon solid acid. Anybody cool with that? Any questions on that one? Pretty straightforward, okay? Again, just a bunch of steps, okay? So you don't want to stop before you're finished, okay? And you always want to remember, where am I going to? The most important stuff.