Table 1. Hydrogen-bond geometry (Å, °) for (I) .
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C8—H8B⋯O4i | 0.97 | 2.51 | 3.295 (7) | 138 |
| C18—H18C⋯O2ii | 0.96 | 2.57 | 3.509 (9) | 164 |
| C25—H25A⋯N3iii | 0.97 | 2.62 | 3.589 (7) | 173 |
Symmetry codes: (i) 
; (ii) 
; (iii) 
.
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