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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1A—H11A⋯O12i	1.00 (2)	1.71 (2)	2.688 (2)	164.2 (18)
N1A—H12A⋯O11	0.95 (2)	1.80 (2)	2.747 (2)	173.9 (17)
N41A—H41A⋯O52ii	0.83 (2)	2.39 (2)	3.216 (2)	170.8 (19)
N41A—H42A⋯O41Aiii	0.99 (2)	1.91 (2)	2.873 (2)	164.8 (18)
O2—H2⋯O12	0.96 (2)	1.58 (2)	2.4897 (18)	156 (2)

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