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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1A⋯O2i	0.85 (3)	2.09 (2)	2.8254 (14)	145.0 (19)
N1—H1B⋯O1ii	0.86 (2)	2.24 (2)	2.9960 (15)	146.2 (16)
O2—H2A⋯N2iii	0.91 (3)	1.80 (2)	2.6877 (17)	165 (2)
N2—H2B⋯O3iv	0.88 (2)	2.25 (2)	3.1158 (17)	167.0 (18)
N2—H2C⋯O4v	0.92 (2)	2.454 (18)	3.2255 (18)	141.8 (15)
O3—H3A⋯O4vi	0.89 (2)	1.77 (2)	2.6522 (15)	171 (2)

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) ; (v) ; (vi) .