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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1n⋯O3	0.86 (1)	1.90 (2)	2.6266 (18)	141 (2)
N2—H2n⋯O2i	0.86 (2)	2.31 (2)	3.0888 (19)	151 (2)
C10—H10⋯O1ii	0.93	2.57	3.330 (2)	140

Symmetry codes: (i) ; (ii) .