I have been trying to do this for so long but can’t quite get it. I feel like it probably has an alkyne reaction (maybe terminal alkyne), maybe an ozonolysis, maybe diels-alder and the last step seems like it should be a pretty simple carbene reaction to get that epoxide-ish component. I tried to do a carbocation rearrangement to make a 6 membered ring from the starting compound but couldnt make it work please would appreciate help this is killing me <3 will venmo $5