. 2023 Feb 27;28(5):2194. doi: 10.3390/molecules28052194
© 2023 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 (https://creativecommons.org/licenses/by/4.0/).
Figure 2.
The key HMBC correlations of compounds 1–8.