. 2020 Jul 24;2020:7909703. doi: 10.1155/2020/7909703
Copyright © 2020 Anteneh Belayneh and Fantahun Molla.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
Chemical structure of caffeine [2].