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Electrospray ionization mass spectrometry (ESI–MS) of the acetone fraction (AF) obtained from Buchenavia tomentosa leaves. (1) Gallic acid (GA) (m/z = 169); (2) kaempferol (m/z = 285); (3) (-) epicatechin (m/z = 289); (4) ellagic acid (m/z = 301); (5) vitexin (m/z = 431); (6) corilagin (m/z = 635).
