 Okay, so let's do this one. We were asking to indicate which Hydrogens are the most acidic hydrogens in this compound, okay? So a lot of you put these hydrogens here, okay? Those are not the most acidic and how do I know? Okay? It's maybe hard for me to tell when I look at it this way, okay? So what I personally would do is Expand it, okay? Like bottom line structure. So let's just draw that. We can really see stuff, okay? So now when we look at these Hydrogens, and I'm going to actually show these two hydrogens, these happen to be the most acidic hydrogens here So when we look at this, right? Remember, it's the alpha hydrogens that are the acidic hydrogens, not the hydrogens that are on the ester, okay? So when we look here If we look where the alpha hydrogens would be or where the Alphacarbon is, it's right there. It doesn't have any hydrogens on it, and it's an sp2 carbon, even if it did have a hydrogen on it, it wouldn't be Acidic hydrogen, okay? But what we want to think of is a nitrile group is kind of like the carbonyl of nitrogen, okay? So if you want to think of that analogy, remember carbonyls, whenever you have alpha to a carbonyl, those are acidic protons So we look here We've got a nitrile. That's a pseudo carbonyl if you want to think of that way, right? Alpha to that is going to be your most acidic proton. So this is your alpha carbon On your alpha carbon are your most acidic protons, okay? Any questions about that? Not the ones on the methyl group, the methyl ester. Those will never be acidic ones, okay? Those are not acidic. Any questions? Wonderful