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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1N⋯O1i	0.92 (3)	1.92 (3)	2.835 (4)	173 (3)
N1—H2N⋯O2ii	0.90 (3)	2.05 (3)	2.899 (3)	157 (3)
N1—H3N⋯O2	0.92 (3)	1.97 (3)	2.887 (3)	176 (3)
N1—H4N⋯O3iii	0.92 (3)	1.93 (3)	2.827 (3)	167 (4)
C4—H4B⋯Br1	0.97	2.71	3.221 (3)	113
C8—H8A⋯O2	0.96	2.44	3.104 (3)	126
C10—H10⋯O1i	0.98	2.49	3.451 (4)	167

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