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A selection of 24 fragment-like molecules obtained from GDB-13 with frequency 0, 5, 10, 15, 20 and 25. The molecules are sorted top to bottom by frequency and left to right by average negative log-likelihood (NLL) of the 25 models. A random sample of 10 million molecules annotated with the frequency and the average NLL is available for download (http://gdb.unibe.ch/downloads)
