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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O2—H2⋯O1i	0.84	1.92	2.6973 (15)	154
C15—H15B⋯O1ii	0.98	2.62	3.352 (2)	132
C4—H4⋯O2iii	0.95	2.67	3.454 (2)	140

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