Well there may be chemicals that'll do the job, but I think I'd sand it were I in your shoes. I'd avoid a blow torch because of the risk of scorching the wood. Used one once to remove paint from a door, found it too fiddly to avoid problems.
nail varnish seems to be remarkable stuff. Removes the adhesive from sticky labels attached to glasses etc. as well!
I'll try that.
NO WAY would I go near a blow torch!