Table 6. Analysis of HSQC-NMR peak assignments.
| Position | Protons |
| 1 | C-1 |
| 3 | C-3 |
| 4 | C-4 |
| 7 | C-7 |
| 9 | C-9 |
| 11 | C-11 |
| 12 | C-12 |
| 13 | C-13 |
| 14 | C-14 |
| 15 | C-15 |
| 17 | C-17 |
| 18 | C-18 |
| 20 | C-20 |
| 21 | C-21 |
| 22 | C-22 |
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