Table 2. Hydrogen-bond geometry (Å, °) for (II) .

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O6i	0.86 (2)	2.07 (2)	2.921 (2)	170 (2)
N3—H3⋯O4ii	0.86 (2)	2.14 (2)	2.963 (2)	160 (2)

Symmetry codes: (i) ; (ii) .