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

Cg1 is the centroid of the C1–C6 ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C5—H5⋯O2i	0.93	2.47	3.382 (3)	166
O3—H3A⋯O2i	0.82 (1)	1.96 (1)	2.765 (2)	169 (4)
N1—H1⋯O3	0.86 (1)	2.12 (2)	2.911 (3)	153 (3)
N1—H1⋯O1	0.86 (1)	2.26 (3)	2.633 (2)	107 (2)
C7—H7⋯Cg1ii	0.97	2.76	3.592 (1)	144

Symmetry codes: (i) ; (ii) .