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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2A⋯O1i	0.831 (16)	2.461 (16)	3.1847 (16)	146.2 (14)
N1—H1A⋯O1ii	0.824 (18)	2.103 (18)	2.9146 (16)	168.4 (16)
C1—H1B⋯N2iii	0.948 (14)	2.635 (14)	3.4369 (17)	142.6 (11)

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