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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C7—H7⋯O18i	0.99 (4)	2.38 (4)	3.315 (5)	158 (3)
N10—H10⋯O19	0.86 (2)	1.86 (2)	2.712 (4)	172 (3)

Symmetry code: (i) .