Table 1. Hydrogen-bond geometry (, ).

Cg is the centroid of the C35C40 benzene ring.

DHA	DH	HA	D A	DHA
C34H34AO43i	0.99	2.42	3.377(3)	163
C38H38O23ii	0.95	2.44	3.295(3)	149
C31H31O33iii	0.95	2.49	3.426(3)	168
C2H2O23iv	1.00	2.51	3.433(3)	153
C16H16AO23iv	0.98	2.53	3.357(3)	142
C19H19CO23iv	0.98	2.54	3.477(3)	160
C18H18C Cg v	0.98	2.89	3.492(3)	121

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