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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N4—H41⋯O1i	0.91 (2)	1.85 (2)	2.7324 (17)	165 (2)
N4—H42⋯O12ii	0.89 (2)	2.40 (2)	3.0599 (18)	131.2 (16)
N4—H42⋯O11ii	0.89 (2)	2.60 (2)	3.3425 (17)	141.8 (16)
N4—H43⋯O1	0.96 (2)	1.81 (2)	2.7579 (16)	172.7 (18)
C13—H13⋯O21iii	0.95	2.47	3.3152 (19)	148
C26—H26⋯O32	0.95	2.49	3.378 (2)	156

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