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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O4	0.96 (2)	1.81 (3)	2.766 (2)	173 (2)
N4—H4⋯O1	0.92 (2)	1.91 (2)	2.823 (2)	172 (2)
C4—H41⋯O3i	0.92 (4)	2.39 (4)	3.231 (4)	153 (3)
C14—H141⋯O6ii	0.88 (3)	2.51 (3)	3.383 (4)	169 (3)

Symmetry codes: (i) ; (ii) .