Table 1. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1O1⋯Br1	0.81 (6)	2.58 (3)	3.355 (6)	160 (8)
O1—H1O2⋯Br2	0.82 (6)	2.49 (6)	3.283 (6)	165 (7)
N1—H1N⋯Br2	0.90 (5)	2.40 (3)	3.238 (5)	154 (6)
C9—H9B⋯Br2i	0.96	2.85	3.792 (7)	167
C12—H12A⋯Br2	0.96	2.82	3.765 (7)	168
C14—H14⋯Br1ii	0.93	2.79	3.436 (6)	128
C16—H16⋯Br2iii	0.93	2.81	3.597 (6)	143

Symmetry codes: (i) ; (ii) ; (iii) .