Table 2. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯O1i	0.91	1.76	2.663 (3)	171
N1—H1B⋯O1	0.91	2.17	2.779 (3)	124
N1—H1B⋯O2	0.91	2.29	2.947 (3)	129
O2—H2⋯O1ii	0.84	1.80	2.634 (3)	171
O1B—H1BA⋯O2	0.84	1.82	2.653 (3)	172

Symmetry codes: (i) ; (ii) .