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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1A—H1AA⋯O1W i	0.86	2.22	3.003 (3)	152
N1B—H1BA⋯O1W ii	0.86	2.14	2.973 (3)	163
N2A—H2AA⋯O1A	0.86	1.89	2.599 (3)	138
N2B—H2BA⋯O1B	0.86	1.90	2.588 (3)	136
O1W—H1W⋯N3B	0.82 (1)	2.06 (1)	2.852 (3)	163 (4)
O1W—H2W⋯N3A	0.82 (1)	2.09 (1)	2.892 (3)	167 (3)

Symmetry codes: (i) ; (ii) .