Some RxNorm record labels have "(USP)" at the end

https://qualitymatters.usp.org/what-letters-usp-mean-label-your-medicine

This is probably not in the spirit of what we're going for regarding "labels" (more akin to the physical labeling, not the 'primary name' for the drug). Possibly -- strip the tag from the end, and include the full tagged string as an alias.

Start by locating the RxNorm record-label normalization entry point and inspect how labels and aliases are currently represented. Compare records ending in “(USP)” with the intended primary name and alias behavior; done means the handling is consistent with the issue’s proposed treatment and the relevant normalization checks pass.

Written by the indexing model from the issue text.