 Okay, so this is the, we're going to do a mechanism for the reaction of an acid halide to produce an ester. So in this case, so we're going to react here in soil fluoride or whatever with sodium methoxide, okay, to produce the ester, the methyl ester. Okay, so the one thing you want to remember is you remember most of these things will donate charge to that electrophilic carbon, right, but the reason we use acid chlorides is because they actually remove charge from it, okay. So since this thing is, the chlorine is more electronegative than that carbon, instead of donating like oxygens, carbons, nitrogens do, it actually pulls it away, right. So that's making this even more positive, okay. Does that make sense? For the fourth time I think I told you today, right, that we know what we're going to make. So since that's super positive, that thing's going to attack, okay, because why? Because sodium of course is a spectator ion, right. So it's not going to do anything. So super good nucleophile, super good electrophile, match made in heaven, like that. Those electrons go up. Remember, why doesn't it attack in just the chlorine leaves? And how's it produced in tetrahedral? Yeah, you've got to do that tetrahedral intermediate. You can't go from an SP2 to an SP2, okay. You've got to produce that tetrahedral intermediate. That was the question from the last video that we did in the recording. But it's a good question. We're going to ask ourselves when this thing collapses back down, which is going to be the better leading, the chlorine or the methoxam, the alkoxa, which one? The chlorine, right, clear. Why? Because it's super electronegated, right. And it's big, you know. It doesn't mind having a negative charge, you know. All of those things. Not saying that oxygen isn't electronegative, okay. Mostly the chlorine is big. So that's our product. Of course, the counter ion for that is a much easier reaction, huh. Is that what you were saying? Like seven seconds, like that one's better. That's what I'm saying. We're going to knock a lot of these down because they're all the same, you know. Are there any questions about this one? Pretty straight up, right.