Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N1—H1N⋯O4i | 0.848 (19) | 2.540 (19) | 3.350 (2) | 160.3 (18) |
| C17—H17B⋯O4ii | 0.97 | 2.57 | 3.532 (3) | 172 |
| C7—H7B⋯O2i | 0.97 | 2.59 | 3.398 (3) | 141 |
Symmetry codes: (i) 
; (ii) 
.
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