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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C1—H1⋯O1i	0.95	2.55	3.308 (3)	137
O1—H1A⋯Cg3ii	0.84	2.66	3.281 (2)	141
C2—H2⋯Cg1iii	0.95	2.90	3.766 (2)	155

Symmetry codes: (i) ; (ii) ; (iii) . Cg1 and Cg3 are the centroids of the unsubstituted Cp and the benzene rings, respectively.