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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O3—H3A⋯O1i	0.84	1.75	2.5920 (13)	175
N1—H1A⋯O1	0.92	1.86	2.7520 (14)	161
N1—H1B⋯O2ii	0.92	1.81	2.6897 (15)	159
C18—H18A⋯O3iii	0.99	2.52	3.3019 (16)	136
C18—H18B⋯O2ii	0.99	2.52	3.2693 (16)	133

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