Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N2—H2n⋯O3i | 0.87 (1) | 2.53 (2) | 3.0349 (15) | 118 (1) |
| C19—H19B⋯N1ii | 0.98 | 2.48 | 3.3602 (18) | 149 |
Symmetry codes: (i) 
; (ii) 
.
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