Table 2. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O5—H5⋯O2 | 0.83 (1) | 1.80 (1) | 2.604 (2) | 161 (3) |
| N2—H22⋯N10i | 0.88 (1) | 2.32 (2) | 3.121 (2) | 153 (2) |
| N4—H42⋯N10i | 0.87 (1) | 2.19 (1) | 3.040 (2) | 165 (2) |
Symmetry code: (i) 
.
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