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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1A—H1A⋯O12i	0.88 (2)	1.91 (2)	2.795 (2)	180 (3)
N41A—H41A⋯O12ii	0.86 (2)	2.14 (2)	2.989 (2)	168 (2)
N41A—H42A⋯O22	0.91 (2)	2.13 (2)	2.974 (2)	152.6 (18)
O21—H21⋯O11iii	0.95 (3)	1.59 (3)	2.5302 (17)	170 (3)

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