Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N4—H4⋯O1 | 0.88 | 1.90 | 2.594 (2) | 135 |
| N5—H5⋯N3i | 0.88 | 2.22 | 3.058 (2) | 158 |
Symmetry code: (i) 
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