rufula? what are you talking about?
epena = snuff made from virola theiodora resin. You dont use the bark, you need the resin, and its not just any virola, different virolas may have different chemical make-up.
and its possible 5-meo-dmt will be destroyed in such high pH as you are using (though this is not sure, just based on people having troubles extracting using lye as a base) .... .
If you get good source material, just do an A/B using dilute acid (because
strong acids will also break it down) and weaker base, or an STB, also with weaker base, and try extracting with a non-polar, maybe better something a bit more polar such as xylene/limonene just to make sure. Remember 5-meo-dmt is VERY strong, you only need maybe 10mg, a few mgs more and you could be in for a serious hellride, please be careful.
And no you're not gonna be able to get INMT enzymes out your piss and mix it in a dish and get some dmt, please stop with this 'piss-extracting' ideas, we've already been through this.