Table 6. Hydrogen-bond geometry (Å, °) for 3 .

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N12—H12⋯O11i	0.856 (16)	2.169 (16)	2.9890 (13)	160.2 (14)
C6—H6⋯O11i	0.95	2.34	3.2549 (14)	162
C15—H15B⋯O18ii	0.99	2.49	3.4239 (14)	157

Symmetry codes: (i) ; (ii) .