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

Cg3 is the centroid of the C11–C16 ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2⋯O1	0.900 (19)	1.678 (19)	2.5652 (14)	167.7 (18)
C6—H6⋯O2i	0.95	2.39	3.3066 (16)	163
C8—H8⋯O3ii	0.95	2.56	3.4199 (16)	151
C9—H9⋯O2iii	0.95	2.44	3.3360 (16)	158
C15—H15⋯O2	0.95	2.36	3.2835 (17)	163
N1—O3⋯Cg3iv	1.22 (1)	3.26 (1)	4.3171 (13)	145 (1)

Symmetry codes: (i) -x, -y+1, -z+1; (ii) -x, -y+1, -z+2; (iii) x, y+1, z; (iv) x, y-1, z+1.