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| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N1—H11⋯O2i | 0.88 (2) | 1.99 (2) | 2.812 (1) | 155 (1) |
| N1—H12⋯O2ii | 0.88 (2) | 1.88 (2) | 2.747 (1) | 173 (1) |
| N2—H21⋯O1ii | 0.84 (2) | 2.19 (2) | 3.033 (1) | 175 (1) |
| N2—H22⋯O1iii | 0.87 (2) | 2.06 (2) | 2.923 (1) | 170 (1) |
Symmetry codes: (i) 
; (ii) 
; (iii) 
.
