Table 1. Hydrogen-bond geometry (, ).
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| O4H4O3i | 0.84 | 1.84 | 2.6748(8) | 176 |
| N1H1O1ii | 0.88 | 2.20 | 2.9041(8) | 136 |
| C12H12BO2iii | 0.98 | 2.62 | 3.3905(11) | 137 |
Symmetry codes: (i) 
; (ii) 
; (iii) 
.
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