. 2013 Feb 21;18(2):2449–2457. doi: 10.3390/molecules18022449
© 2013 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/).
Figure 1.

Chemical structure of compound 1.