Data Debugging -- Change RETAPAMULIN Active Moiety

[grishagin]

RETAPAMULIN currently points to itself as active moiety:
https://drugs-dev.ncats.io/ginas/app/substance/4MG6O8991R
Should instead point to PLEUROMULIN:
https://drugs-dev.ncats.io/ginas/app/substance/3DE4A80MZ1

Basically, is it possible to change stitches, when a text file is supplied in the format:
```UNII - Property - Value (old) - Value (new)```

UPDATE:

1. We make structure-based active moiety rule
2. Generate report of discrepancies
3. Send to FDA
4. Come up with solution