I'd just add a customised hop with parameters that best reflect what you've got. The main thing is to document what you do and base any subsequent tweaks on that. Hop essential oils seem to be becoming a thing lately, even though they have been used in brewing since the 19th century. I think the problem at the moment is there seem to be a number of different kinds of extractions with varying marketing claims and a lack of data re how they behave therefore how best to use them. Traditionally, very sparingly post fermentation.