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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C2—H2B⋯N2i	0.93	2.56	3.361 (2)	144
C5—H5B⋯O2ii	0.97	2.57	3.527 (2)	167
C7—H7B⋯O3iii	0.96	2.49	3.340 (2)	147

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