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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2A⋯O1i	0.89	2.44	2.949 (6)	117
N2—H2A⋯O2i	0.89	2.47	3.300 (6)	155
N2—H2B⋯Br2i	0.89	2.61	3.339 (4)	139
N2—H2C⋯Br2ii	0.89	2.58	3.417 (5)	157
O3—H3A⋯Br1iii	0.99	2.28	3.245 (4)	165
O3—H3B⋯O1iv	0.83	2.18	2.961 (5)	157

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