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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C4—H4⋯O2i	1.00	2.55	3.4145 (19)	145
C7—H7B⋯O1ii	0.99	2.59	3.570 (2)	173

Symmetry codes: (i) ; (ii) .