Table 1. Hydrogen-bond geometry (, ).
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| O1H1N1 | 0.82 | 1.78 | 2.523(3) | 149 |
| C13H13O1i | 0.93 | 2.62 | 3.492(3) | 156 |
Symmetry code: (i) 
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