 Try this one. This one is where we're taking a name and actually drawing a structure, ladies. So, E3-I-O-2 pentene. What is the first thing that you would do? Draw the pentene part, okay? So, what does pentene mean? I guess I just told you, right? So, let's do Charlie Brown. One, two, three, four, five. So, when we look at this, what's the next thing you would do? Find your triple bond. Well, the double bond. Where's the double bond, right? So, it's on the two-carbon. Yeah, I know you. So, the E means double bond, right? That's what we're talking about. So, on the two-carbon, we'll say that's one, that's two. So, we want to put a double bond here, right? So, three-I-O-2, right? So, where's the iodine going to be? The third carbon. So, is it going to be on the double bond? No. One, two, three, right? That says it will be on the double bond, okay? So, there. And we're just drawing this for right now, and then we're going to come over here and check whether we've got this right, this E-right, okay? So, E, what does that mean? Does it mean they're on the same side or on the opposite side? Opposite side. Opposite sides, okay? The two big groups are on opposite sides around the double bond, okay? So, let's draw the other group, because we see one, two, three of the groups, right? The other group is a what? Hydrogen. So, let's just draw that in just for our own sake, okay? So, when we're talking about the same side and opposite side, we're talking about the two bigger groups, right? Okay, so, when we look at this, what's bigger? A methyl group or a hydrogen? Methyl group. Methyl group, okay? What's bigger? Iodine or this methyl group? Iodine. The iodine, okay? So, E, what did we say? That's on opposite sides. So, do we have the two big groups on opposite sides of each other? Not now. Not now, so we got to switch this around, right? Okay, so, now do we? Yes. So, that's the structure, okay? So, I'm going to actually erase that hydrogen just so we don't confuse ourselves and remember that this is the methyl group down there. Okay, so, it kind of looks ugly. Like that? This is tricky. Any questions on that one? Okay, so I want... The iodine is bigger than the methyl group. Why is iodine bigger than the methyl group? Good question, and I was hoping somebody would ask me that question, right? But what we're really looking at is not the methyl group itself, right? We're looking at the difference between iodine and carbon. Yeah. And when we look at the periodic table, right? Iodine has a higher atomic weight than carbon does, so that's the way we prioritize. Okay. We're looking at the whole group. Yeah, so that's a very common misconception that organic students have, okay? And something that we want to jump over that hurdle right now. We're just looking at the next carbon away. And from that, the next carbon away. Or the next atom away, I guess. Any other questions? That is a good question. Okay, good job, guys.