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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1A—H1NA⋯O1A	0.82	1.95	2.598 (2)	135
N1B—H1NB⋯O1B	0.86	1.86	2.589 (2)	141
C5A—H5A⋯O1Ai	0.93	2.52	3.251 (3)	136
C5B—H5B⋯O1Bii	0.93	2.33	3.196 (3)	154
C11A—H11A⋯O3Biii	0.93	2.55	3.402 (3)	153
C11B—H11B⋯O3Aiv	0.93	2.58	3.429 (3)	153

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