. 2018 Sep 7;23(9):2286. doi: 10.3390/molecules23092286
© 2018 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 3.
Key NOESY (
) and HMBC (
) correlations of 2.