May I suggest from years now of gleaning boiling flasks hehe and such how to get that?
Disolve it in methanol which is a good way to clean the flask too. I can almost guarantee that most things left in that flask do not like hexane and do not really care much for methanol either except when warm or hot. Cannabinoids are miscible in both hexane and methanol. Once it is disolved and cooled to room temp do the steps in this link and you should be able to crash out most stuff except cannabinoid which can then be tossed into the next batch. The hexane will evap off at room temp and there should not be much anyway.