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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1N⋯O4	0.79 (3)	2.33 (3)	2.653 (2)	106 (2)
N1—H1N⋯O2i	0.79 (3)	2.66 (1)	3.057 (2)	113 (2)

Symmetry code: (i) .