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

Cg2 is the centroid of the C9–C14 benzene ring

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H21⋯O1W i	0.86 (1)	1.96 (2)	2.820 (4)	174 (3)
O2—H2⋯N1	0.87 (3)	1.83 (3)	2.595 (3)	146 (5)
O1W—H1W⋯O2	0.85 (3)	2.23 (3)	2.974 (4)	147 (4)
O1W—H2W⋯O3ii	0.86 (3)	1.82 (3)	2.675 (3)	177 (4)
C16—H16C⋯Cg2iii	0.96	2.70	3.517 (3)	144

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