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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
A diagram for rapid classification and tentative identification of chemical constituents in the extracts of fruits, leaves and root barks of L. barbarum by UPLC-HR-MS, and the structures of standard compounds in different classes.