Table 2. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C9—H9⋯O4i | 0.93 | 2.54 | 3.355 (8) | 146 |
| C19—H19B⋯Cgii | 0.96 | 2.84 | 3.520 (9) | 128 |
Symmetry codes: (i) 
; (ii) 
. Cg is the centroid of the N2/C10–C14 ring.
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