Table 2. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1A—H1A⋯O3B	0.86	2.16	3.008 (11)	169
N1B—H1B⋯O3A	0.86	2.22	3.016 (11)	153
C3A—H3A⋯O3B	0.93	2.48	3.357 (11)	157
C6B—H6B1⋯O5A i	0.97	2.41	3.227 (10)	141
C7A—H7A⋯O5B ii	0.98	2.41	3.288 (8)	149
C8A—H8A2⋯O1B iii	0.97	2.52	3.459 (11)	163
C8B—H8B1⋯O1A iv	0.97	2.15	2.961 (12)	140

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