Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C20—H20B⋯N2i | 0.97 | 2.49 | 3.391 (5) | 154 |
Symmetry code: (i) 
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