. 2017 Dec 8;22(12):2176. doi: 10.3390/molecules22122176
© 2017 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/).
Figure 1.
Chemical structures of Compounds 1–14.