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. 2011 Feb 25;16(3):1956–1972. doi: 10.3390/molecules16031956

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© 2011 by the authors;

licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Chemical structure of khellin and visnagen.