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(A) A heatmap representation of bean extract 8 (BE8) and modified BE8 was identified by two-dimensional (2D) liquid chromatography/mass spectrometry (LC-MS). (B) Global Natural Product Social (GNPS) molecular networking (MN) of modified BE (CBE). Red cercle: Detected β-carboline with a piperidine C-ring and a vanillin moiety at C-1.
