Table 1. Hydrogen-bond geometry (, ).
Cg1 is the centroid of the C1C6 ring.
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| O1H1N1 | 0.85 | 1.90 | 2.632(2) | 144 |
| C7H7O2i | 0.93 | 2.48 | 3.364(2) | 160 |
| C15H15A Cg1ii | 0.97 | 2.77 | 3.694(3) | 160 |
Symmetry codes: (i) 
; (ii) 
.
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