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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N7—H7⋯N21i	0.89 (2)	2.14 (2)	2.976 (3)	157 (2)
C9—H9B⋯O1ii	0.99	2.34	3.197 (3)	144
C16—H16⋯S2A iii	0.95	2.73	3.58 (2)	149
C19—H19⋯S1iv	0.95	2.76	3.652 (5)	156

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