Abstract Background Chemical compounds affecting a bioactivity can usually be classified into several groups. each of which shares a characteristic substructure. We call these substructures "basic active structures" or BASs. The extraction of BASs is challenging when the database of compounds contains a variety of skeletons. https://www.itsmajorlook.com/super-save-OffWorld-Percussion-Outlander-Practice-Pad-limited-super/