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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯N2i	0.881 (17)	2.553 (18)	3.425 (2)	170.5 (13)
C2—H2⋯O1ii	0.95	2.33	3.251 (2)	164
C12—H12⋯O2iii	0.95	2.55	3.164 (2)	122

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