Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O5—H17⋯O3i | 0.86 | 1.99 | 2.8465 (13) | 178 |
| O5—H18⋯O2ii | 0.87 | 1.96 | 2.8274 (16) | 176 |
| N2—H6⋯O5 | 0.88 | 2.07 | 2.9341 (14) | 166 |
Symmetry codes: (i) 
; (ii) 
.
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