. 2022 Feb 14;9:807508. doi: 10.3389/fchem.2021.807508
Copyright © 2022 Zhu, Kong, Hong, Zhang, Li, Hou, Chen, Xie, Hu and Wang.
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FIGURE 2.
Key COSY (bolds, blue), HMBC (arrows, pink) correlations of 1‒3.