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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2N⋯O2i	0.92	2.08	2.964 (4)	160
N2—H2N⋯O3Ai	0.92	2.49	3.274 (17)	144
C2—H2⋯O1ii	0.95	2.57	3.409 (5)	148
C3—H3⋯O3A	0.95	2.55	3.23 (4)	129
C4—H4⋯O2i	0.95	2.37	3.152 (5)	140
C7—H7⋯O3Ai	0.95	2.25	3.07 (2)	144
C10—H10⋯O2iii	0.95	2.53	3.334 (5)	142

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