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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O4i	0.86	2.03	2.860 (6)	161.00
O3—H3O⋯O5ii	0.91 (7)	1.73 (7)	2.616 (6)	165 (7)
O5—H5A⋯O2iii	0.81	2.20	2.924 (6)	149.00
O5—H5B⋯O1	0.88	1.98	2.791 (6)	152.00
C6—H6⋯O1	0.93	2.36	2.793 (7)	108.00
C11—H11⋯O2iv	0.93	2.52	3.437 (6)	171.00
C12—H12⋯O1	0.93	2.54	3.035 (7)	114.00
C3—H3⋯Cg2v	0.93	2.90	3.818 (7)	168.00

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) ; (v) . Cg2 is the centroid of the C7–C12 ring.