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. 2012 May 25;17(6):6362–6385. doi: 10.3390/molecules17066362

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© 2012 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/).

PMC Copyright notice

ORTEP plot of the X-ray crystallographic data determined for 8b. Crystallo- graphic data have been deposited with the Cambridge Crystallographic Data Centre as supplementary publication number CCDC 874404 [35].