Figure 2
Structure of compound 2. (a) Chemical structure of compound 2. (b) Key 1H−1H COSY (blue) and HMBC (red arrows) correlations of compound 2.
Figure 2 | Scientific Reports
Structure of compound 2. (a) Chemical structure of compound 2. (b) Key 1H−1H COSY (blue) and HMBC (red arrows) correlations of compound 2.
