Hello - awesome game! These really bring back memories!
I must be beyond dumb though - I can't throw the cocktail at the end! I've left the lab, turned on the gas, lit the rag, freed Betsy, but typing 'throw' or 'use' with 'bottle' or 'molotov cocktail' or anything gets me nowhere! Help!
(Of course - I'm presuming it's the end!)