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The MS spectra in negative mode of seven representative compounds in the T. chebula fruits extract: shikimic acid (a), gallic acid (b), 5-O-galloylshikimic acid (c), corilagin (d), peak (e), 3,4,8,9,10-Pentahydroxydibenzo [b, d] pyran-6-one (f), ellagic acid (g).
