Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C5—H5A⋯N2i | 0.95 | 2.51 | 3.453 (4) | 171 |
| C9—H9A⋯N2ii | 0.95 | 2.61 | 3.433 (4) | 145 |
| C4—H4A⋯O1iii | 0.95 | 2.53 | 3.444 (4) | 162 |
Symmetry codes: (i) 
; (ii) 
; (iii) 
.
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