00:01
In this problem, you're given two structures and you're asking them.
00:04
So if we start with our one on the left, we're looking for the longest chain.
00:08
So if we count them up, we have seven as our longest chain.
00:16
Now be careful with these.
00:18
Sometimes you'll have one of these side chains that ends up being longer, so be aware of that.
00:23
Here, it would be the same, but it would be different naming because these substitutions would be different.
00:33
So what we want to do now is look at our substituents.
00:38
So at carbons 2, 4, and 5 we have methyl groups.
00:45
So tri -methyl, because there's three of them.
00:50
At carbon 4, you have a 3 -carbon chain...