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Heatmaps of the molecular features illustrating K-means clustering for the 58 alkaloids of P. nudicaule and P. rhoeas derived from molecular network-guided analysis. Specimens from each analysis were hierarchically clustered. Representative metabolites were proposed for (A) NW, (B) NS and NW, (C) NS, (D) NP, (E) NO, and (F) RA.
