Figure 3.

Spectral cluster observed in ESI positive mode and formed by nucleoside derivatives. A) MN layout representing the Mass2motifs interactions that group the nodes. B) Bar plot with the number of annotated nodes according to the different approaches. Additional MN layouts showing GNPS library search (blue node), nodes equivalent to mass features annotated by Progenesis QI using fullscan MS1 (red node) and MS2 (green node), and the chemical classification at the superclass and direct parent levels. ClassyFire also suggested “Purine Nucleosides” at the class level.