Alright, guys, let's attempt to draw that al kind structure that was left on the bottom of the page. So here, no nine means that we have a nine carbon chain and the triple bond starts on carbon number two. So we're gonna have ch three see triple bonded toe another. See both those carbons already making four bonds. So neither one has hydrogen on carbon number four. We have our benzene. Remember, Benzene looks like this five, six, seven, eight and nine. So this would be our structure. So if you do this correctly, you should have gotten this as your answer. Now, you could have drawn the triple bond from the other end that have been completely fine. You have just started numbering 1234 the opposite way. But as long as the connections air, there it be okay as well. So we've gone over how to name Al Canes are keens and all kinds. So remember the differences between them and notice how the ending changes based on the different functional groups present when we move on to more complicated functional groups, this trend continues where we change the end of the name to a new ending based on the functional group present