Table 2. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N9A—H9A⋯F1iii	0.72 (2)	2.23 (2)	2.923 (2)	161 (2)
O18A—H18A⋯O11A	0.83 (1)	1.79 (2)	2.554 (2)	152 (3)
N9B—H9B⋯F2iv	0.82 (1)	2.16 (1)	2.937 (2)	159 (2)
O18B—H18B⋯O11B	0.81 (1)	1.81 (2)	2.549 (2)	153 (2)

Symmetry codes: (iii) ; (iv) .