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Mass spectrum and chromatograms of metabolites M3 and M4 (m/z 240.98). Data: MSE mass spectrum of M3 in the negative ionization mode (a), and extracted chromatograms of the ion m/z 240.98 (b) and fragment ion m/z 161.02 (c). The illustration is to exemplify the fragments of the hydroxycoumarin sulfate isomers.
