Table 1. Hydrogen-bond geometry (Å, °) for (I) .
Cg1 is the centroid of the C18–C23 ring.
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C28—H28B⋯O1i | 0.97 | 2.36 | 3.262 (4) | 154 |
| C28—H28A⋯Cg1ii | 0.97 | 2.95 | 3.861 (4) | 157 |
Symmetry codes: (i) 
; (ii) 
.
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