Table 2. Structure matching (Å, °) between the four independent molecules.

A is the structure match between molecules 1 and 2, B between molecules 1 and 3, C between molecules 1 and 4, D between molecules 2 and 3, E between molecules 2 and 4, and F between molecules 3 and 4.

Overlay	r.m.s. bond length	r.m.s. torsion angle	r.m.s. torsion
A	0.0707	0.0074	2.1002
B	0.1754	0.0074	5.0807
C	0.0917	0.0073	2.7283
D	0.1174	0.0063	3.479
E	0.0505	0.0093	1.5649
F	0.0896	0.0091	2.6273