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. 2016 Sep 3;21(9):1175. doi: 10.3390/molecules21091175

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© 2016 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 (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

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Key ¹H-¹H COSY (HH), HMBC (H→C) and ROESY (H↔H) correlations of compound 2.

Inline graphic — Key ¹H-¹H COSY (HH), HMBC (H→C) and ROESY (H↔H) correlations of compound 2.