Table 2. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N2—H2N⋯N9i | 0.92 | 2.31 | 3.208 (4) | 165 |
| C1—H1⋯N4 | 0.95 | 2.35 | 2.816 (5) | 110 |
| C4—H4⋯N6i | 0.95 | 2.40 | 3.175 (5) | 138 |
| C10—H10⋯N7 | 0.95 | 2.35 | 2.861 (5) | 113 |
Symmetry code: (i) 
.
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